Right now I have a stock height 75 K10, which I am in the process of rebuilding enough to go wheeling with. I plan to lift it between 2" and 4" and run 35's until they wear out (and I have enough money to get new axles.) Question: Do leaf springs "wear out"? I am investigating the shackle flips but am not sure I really want to stick with my old rear springs...I know some people get them "rearched." How much does this cost? Where would I go to get it done? And is it worth it? My truck really sags in the rear (about 2".) Is there a place where I could get new or takeoff OEM springs for a good price? I don't want to spend $200+ on stock springs @ LMC when I could just buy lift springs at that price. Any other advice is of course welcome. Looking for a good compromise between ride quality and $$$, just afraid the standard 4" EZ ride + ORD/DIY4X shackle flip will let me down if my rear springs are trashed. Thanks in advance.