I had the FTEx from the beginning, tried a new extractor and spring which Kel Tec quickly sent to me, didn't work. While working at a Daytona Beach job site, I was able to drop off the gun, picked it up on my way home. Better, but still not perfect. Did the same routine passing by, this time I had a long talk with the tech, they test fired it again, they DID have a FTEx. I picked it up the next day, ran 100 flawless rounds through it. I did at that time polish the feed ramp and the chamber making sure there were no rough spots inside and no sharp edges at the opening, the gun has shot about 700 perfect rounds through since, these include WWB, Federal, reloads, Gold Dot Short Barrel, etc. I for one have generally nothing but good to say about the Kel Tec people and the KTOG forum has worked well for me also.