My TRS came with an 18.5# recoil spring. I have put close to 2000 rounds through already with never a hiccup. Beautiful gun. Anyway, being concerned about the barrel lugs battering the slide stop pin on the return to battery, I decided to try a 17# recoil spring today. I noticed that the brass was ejecting in the right direction (to the right and behind me), but was now flinging it between 7-12 feet away. Also, as I would slam home a new mag and slingshot the slide to battery, it would fail to feed about every fourth mag. The round would get caught going up the barrel ramp and stop causing the slide to stop. Now my question is, could a slight change in my recoil spring cause these two issues. Those were the only "problems". Everything else went great as usual. Maybe there is a reason why Les puts 18.5# recoil springs in his TRS. He knows more than me that's for sure. Thanks for the replies.