Doesn't look like the extractor is the problem. Might just be from shooting shitty loads and not getting enough Ooomf, I get stovepipes from factory 115 ammo like winchester. my reloads also extract, never had a problem.
I just looked at the compensator, youre right, it does look like the recoil spring (the metal stick) was rubbing against the compensator and caused some scratches. Wouldnt it be okay to round off the actual end of the recoil spring instead of messing with the compensator? cost more to replace that trubor barrel then a recoil shaft thingy.