True precision copper barrel - True Precision Glock 43 Threaded Barrel, 1/2x28

I bought this TP threaded barrel to replace my TP non-threaded barrel on a TP slide. Barrel fit well and looked great; however, there was a problem with the function. I tried 3 different guiderods before i found one that allowed the slide to be removed. Remember, the original TP barrel worked fine on the TP slide, and when switched back, it still worked fine. The other issue is that after 50 rounds, the finish is prematurely wearing all over. During the 50 rounds there were NO feeding or any issues at all with function. Now that i have put 500 rounds through the new barrel it has begun to function better with other guiderods but wear is pretty bad. I have numerous slides, barrels, etc. from TP and other reputable companies on many Glocks I build, and this is the first issue that I have had. I would still recommend TP and feel that this was just an out of spec that got through the QA process.