My 85 Combat has about 2500 rounds through it. I ordered a couple of spare Wolff recoil springs, part# 43014 as replacements.
After replacement, I started to get FTE's where half the case would still be in the chamber & the slide is held open by the top round in the magazine jammed under it. I also get the occasional premature slide lock with rounds still in the magazine. I have tried Geko 124gr, WWB 115gr, Blazer brass 115gr, and 5 different magazines.
I put the original CZ recoil spring back in and everything works fine. It tried clipping up to 3 coils from the Wolff spring but that does not help.
What should I do? Use only CZ springs? Any help would be greatly appreciated.