Moog camber kit junk?

Not ideal unthreaded shank length, but those adjusters can be reused. You might need to hold the eccentric washer from rotating with a flat screwdriver wedge while tightening. The damage is from using the bolt head to turn the eccentric washer with the threaded section. Don't weld the area to build it up which will anneal/soften the bolt. To determine if you need a washer to prevent a loss of thread engagement when tight, measure the thread length protruding from the nut when torqued, add the nut height, and see if that length is in the damaged area or just add a heavy washer. Looks like you have plenty of excess thread length.

Picture of the installation with the cocked or bent eccentric? Is it the same situation on both sides? Damage when torching out the original bolts? A loose fit to the bolt shank means the eccentric may not stay square/parallel to the nut face if the car flange surfaces are not level and square. It doesn't have to be perfect.