I've recently gotten back to shooting my long neglected G29. Put on some Talon rubber grips, installed a LW 3.5 connector and 6# trigger spring, put in the KKM barrel. The serrated trigger has been replaced with a smooth faced trigger, as well. I'm excited about 10mm again! I like larger pistols, especially for heavier calibers, so I'm trying to decide if I should add a G20SF, or a G20 Gen 4? Your thoughts on that? Have the G20 Gen 4 troubles become a thing of the past?