Where exactly is the wear? And, more importantly, are you hand-loading rounds into the chamber then closing the slide? If so, you shouldn't be doing that with any semi-auto, as it stresses the extractor claw. The rim of the cartridge is designed to slide up behind the extractor.
The rounds are only chambered from below by
the magazine. The wear is on the lower front edge
of the claw. I guess, I am just paranoid. I ordered
a spare extractor from Earls and will keep it around