Hi all I have had problems with a new gen 4 model 23. It has digested about 300 rounds of HP self defense ammo in varying weights without any issues. However, I've experienced 25+FTF when shooting various 180 gr FMJ for practice. Should I send this puppy back to glock and is this a problem with these new guns? I have had zero issues with my models 21sf, 19, and 36. thanks for your ideas.