All I have been lurking here for awhile and really enjoy the forums, lot's of good information and information sharing. Anyway, I have a G20sf Gen 3, stock in all aspects, and have about 400 rounds through it (a mixture of factory and handloads) and seemed to have developed a problem at this point. Specifcally a FTE. (read extract) It appears after firing that the brass is extracting only about 3/4's of the way out of the chamber. I originally believed the problem was due to an excessively dirty chamber caused by unburned powder particles and residue(14.0 grains AA#9 under a 180 XTP & 14.0 grains AA#7 under a 155 XTP) however after repeated cleaning and firing the problem persisted even with AE factory ammo. I detail stripped the gun and everything including the extractor looks good to go, except the loading block as shown below. It appears to me that the loading block itself is not sitting flush on the frame with forward portion raised ever so slightly. I cannot get it to sit flush after repeated attempts, although admittedly i dont know if it is even supposed to. My question is- is the loading block supposed to be perfectly flush with the frame and if it isn't could this be slowing down the slide and causing this issue? There are wear marks on top of the loading block on both sides Wanna kill these ads? We can help!