First off, read this carefully! This is in no way meant to offend or criticize or knock ANY vendors here, period. what I am asking is IF someone had quality improvements suggestions to any vendors here, would you, the vendors want to here them? I have bought products from several vendors here and of course other sources, and although I have been "satisfied" with the majority of the stuff I have purchased there have been issues from very minor details oriented things wrong with a product to "damn, this doesn't fit at all" situations. I would still buy from most any vendor here with out question, but as you read further here is a situation of just what I am talking about. Example: I bought a CRANE cast chromoly 14ff diff cover through rokmen.com, the first cover that arrived had several HUGE Casting Porosity voids or pockets in the cover. One was approx. 5/8 to 3/4 in deep in from the side edge of the cover, and was large in diameter. The hole opening was only about as big as a tooth pick, but once I stuck the tooth pick in, I could spin it or swing it around a great deal. I called Dave at rokmen.com, he said he would send me a Call Tag to return it, and a new Diff Cover out as soon as he received the bad one, and put me in contact with the owner of Crane, which he did. He said he had never seen or heard of that problem before, Said he would fix it no problem, not to worry. It didn't deter me from that brand at all. Have heard nothing but good about there covers. I shipped the old one back and got a new one in no time along with a 'T' shirt, a key chain bottle opener, and extra stickers for my troubles. Dave at rokmen.com and the guys at Crane bent over backwards to remedy my problem. I will be buying a crane diff cover for my d60 in the future. the new cover was fine except for a couple of things. Being a machinist I always check things out, so I put in on the surface plate to check flatness and was surprised to find it out by about .03 to .04. that's a country mile in my field. So I took it home to surface grind it on my 20 in disc grinder. I dropped the table down all the way to expose the entire 20 in dia wheel, then held the cove against it until it had cleaned up past all the bolt holes. The other thing I found NOT to my likeing was the casting where the bolt heads contact the cover was no where near flat. I put it back on a inspection surface plate and used a dial drop indicator and found that they all were approx. .015 to .025 out of flat just from one side of a hole to the opposite side of the hole. This obviously means when you torque the bolt to the proper spec. you are contacting a small area and loading only one side of the bolt which because of that condition its trying to push the bolt sideways instead of seating on the full contact surface of the bolt head, NOT GOOD. Even when it reaches its proper torque, in that condition it will eventually come loose, and you might be getting a false Torque reading on top of that. I fixed this problem by spot faced all the bolt lands with a spot face tool in a mill. Now I have a cover that will seal correctly and the bolts shouldn't come loose if torqued properly and some locktite is used. After I had received my cover a few days later the owner of Crane called me to see if I was satisfied, I had already done all the mods to it. I said "well yea, but I did make a couple of improvements". He said "Oh yea, like what?" So I told him what I had found and what I had done to my cover. He was a bit surprised, and jokingly said "what, are you gonna grind our name off and put your name on'em instead, and try and sell them?", I said "no, just made some improvements I felt were necessary". I thanked him and that was that. I was telling him about these mods in the intrest of them possibly improving their part but they didn't seem interested in making or even considering any of the suggestions I made. Think about it, if the high spot on the mounting surface of the cover, that goes against the axle was "Side to Side" and it was say .03 to .04 out of flat, and you installed the bolt starting at the Top like most guys do to hold the cover in place so they can get the rest of the bolts in, you are making the bottom of the cover have a .03/.04 gap. If you happen to torque the bolts starting at the top, the bottom never contacts the housing. The only thing sealing it is there supplied "The Right Stuff" Silicone. If you bang the bottom of the cover on a few big rocks hard enough, or enough times what will happen probably on the Minimum side a leak starts from the cover flexing back and forth, to maybe some thread damage in the housing cause the cover trying to force the bolts out as its trying to pivot the cover on those high spots on the mount surface. If the cover is stiff enough it could load the bolts enough to cause the threads to stretch. Cast Iron Threads are not that strong to began with. Also it could cause the bolts to loosen up as it pushing the bottom of the cover away from the bolts heads. The mods I did were well worth it in my opinion. So, AM I WAY OUT OF LINE to post this at all? dont want to, and not trying to piss anybody off. I figure if it makes for more satisfied customers for the vendors here then thats a good thing. I tried to post in the vendor forum but it wont let me. I guess its cause im not a vendor. The reason I wrote this is when I have had a problem with a part I just fix it myself and move on. It would be great to have a part that was JUST RIGHT, JUST ONCE.