I just added a 4" lift to my 71 k5. The front drive shaft looks to be a bit short now so I may have to get a longer one. But that's not the big problem. It's a double cardan style shaft so I think the angle out of the x-case is ok, but I'm confused about the angle at the front diff. I attached a little picture of what the posts say it should look like (A) and the lower one (B) is more like mine. I've probably got ~ 10 degree of angle at the housing. So if I really need to get it to be 0 degrees, are shims safe on the front end to make the angle? Are there any other options?