Welcome and thanks for your video..I am sure it will help many here. My only question is: Is your mag extension a Plus 1? I added the Pierce extension on one of my mags, but it is NOT a Plus 1 so it was pretty much solid and added very little if any space for the mag spring to expand into so I have not had any problems what so ever, but, going on the theory G23 mentioned, it would make sense that a plus 1 or plus 2 extension would indeed require longer springs. Something not mentioned by the Pierce or Scherer manufacturers I do not believe. Well anyway, thanks again and again WELCOME to this great forum!!