Steering Problem -Need assistance

Well, after laying under the car for the last hour, closely examining every possible scenario, I'm still totally stumped. I used the Schumaker V8 conversion mounts(biscuit type) and they look fine. The engine isn't sitting lower, or more to one side, or tilted. I though that it could possibly be the header being hit as they hang low, but staring at the piping they look like there is absolutely no other place for them to go. They fit snuggly between my power steering gear and the starter. It's almost like the pitman arm was removed, turned a quarter turn, then tightened back in place. Of course I'm the only one that works on the Dust, so that is ruled out. Is there anything in the gear that could slip and then lock back into place and therefore change the whole steering dynamic?