Alignment issues, bent trailing arm? Options

[Alapone]

I am having trouble getting my car aligned properly. The tech was saying the rear left was set to +1.00 camber. This was noticeable when crouching behind the car. The front alignment was substantially toe-in in order to counteract this.

Rewind 18 months: The car was slid into a curb which resulted in a bent wheel and some damage to the inside trailing arm hook up point (don't have the real term for this but I mean the ear where the inside bolt of the trailing arm hooks to the car. This was all supposed to have been fixed and straight.

Last week: Having recently finished a 5 lug conversion which retained the same rear trailing arms I went to go have an alignment done when they told me someone non specifically "something in the rear is bent".

How do I go about checking to see what is wrong? I assume autocross guys have good experience with this type of thing. Do trailing arms bend? Is the ear/hook up point the place to start? I'm sure I can find a used straight trailing arm for $100 or so here on the world but what am I up against if it is damage to the ear/hook up?

Any advice is appreciated