6 weeks and 1 day from the time KT got my gun back for a 15% failure to extract the spend rounds from the barrel I got it back. I was expecting 8 or 9 weeks so I was pleased. It was even overnighted so that was nice. The problem I have is that they said they polished the ramp (I am not certain what that had to do with the problem I had) and test fired it OK. What they did not do was replaced the factory damaged buttonhead screw that nobody here can get a 2mm allen into. We tried new allens, worn ones, ball drivers, you name it. So one of the main reasons I sent it in was to have the factory replace the screw and check the spring and the extractor itself. Maybe they looked at the extractor but the defective screw that nobody here could get out without destroying it is still in place. The extraction problem from the barrel and the request to replace the screw were clear in the letter I sent. KT has some explain'n to do on Monday by phone. In the meantime I will take it out and see if they fixed the problem I complained about with the FTEs.