I am a new Glock owner, and I have a question about the spring pressure in the magazines. When I load the 10 rd mags when I get to about #7 it is very hard to load the last 3 rounds, with the 15 rd mags I get to about 10 or 11 and then it really becomes a struggle. I'm a BIG guy and I can't believe I have sooooo much trouble getting those last few @###$$$% rounds in the magazine. Will they loosen up with use or if I leave them fully loaded for awhile ? Or maybe I am just a wimp!!!! :-D