Can't align front end, need help.

[crawdad]

I had mentioned this problem in a thread on the 73-87 forum, but didn't get that many suggestions so I thought I would give it a try here. I put new tires on a truck I recently bought (86 Silverado, LWB) and had the front end aligned. Discovered the lower, passenger side control arm was bent on the front lower edge, just below the bushing, and there was more space between the rear of the tire and the fender on the driver side than on the passenger side. It appeared the truck had run over something and hit the lower control arm. Had to have been a good whack to bend it like it was. Truck would not come into alignment specs. I went to the salvage yard and got another lower control arm and replaced the one on there. Better, but still want come in to specs. It ended up reading 1.5 degrees negative camber (top of tire leaning in). Took it to a body shop to see if frame might have been bent. They could not find any bend in the frame. What to do next? Is it possible the upper control arm might have been bent as well? How about the spindle/steering knuckle? Could these cause the negative camber problem I'm having? Any help or ideas on what to look for would be appreciated.