At least it wasn't like my MPC Charger 500 that I got a while back! lol! I kid you not---this is the condition it came in! Seems someone left it on a windowsill or near the heater too long! (The eBay seller replaced it for nothing!)
In this case, I just built up a new one--my fear is that you may THINK that you've straightened and corrected it, but when you get to the mating of the body/tub, you might have unacceptable issues with the fit? ALl that work for NOTHIN'!
If I were you, I'd go with either purchasing a new same kit, or try writing to the company for a replacement body--put the kit build on hold til you get a reply.