Thermo... Yea, I didn't see much difference between the springs as far as pull weight goes.
High lord... No apex sear. I'm basically a cheapskate, so I just bought the parts mentioned and smoothed out the rest of the stuff.
Sarge.. It's possible I may have had a high primer or two but I don't think I had that many. I've never had a problem with this gun before. About 1200 rounds prior to last weekend. I'll pass on the Glock.. They are kinda' fugly to me. lol
Steathly.. I just happen to have some lighter recoil springs on the way here. I was messing with light loads a couple of weeks ago and I got to the point where they wouldn't cycle, hence ordering some springs. When I get them, I'll try it with both of the lighter springs and see what happens.
There is a gun show this weekend close to me and I;m gonna see about tradin' my XDM 40 for an M&P 40.....