1911 spring tuning

Question for those wih more 1911 experience than me and the relationship between the main and recoil springs.  Below is some history of my pistol tuning, i am just wondering if anyone have encountered a setup with my spring combination or is it a bandaid for something that i havent figured out yet?

SA Range Officer, 185gr Federal Gold Medal Match .45ACP
-Dropped to a 12lb Wolf recoil spring to cycle the ammo, pistol functioned fine
-Changed out the ILS to a std housing and 23lb main spring, pistol functioned fine

-changed to 19lb main spring, slide batters the recoil spring guide
-changed to a less rounded firing pin stop, no changes
-changed to a 16.5lb recoil spring, no changes
-changed to a 20lb recoil spring, pistol functioned and felt smooth but had a few rounds fail to chamber
-changed to a 22lb spring, pistol functioned perfectly
-changed to a 24lb recoil spring, pistol failed slide lock so went back to the 22lb spring.

Barrel is locking up poorly and its coming out of battery too fast. I use 10# recoil spring in pistols I build. Since your pistol cycles 22# spring with match wadcutter it's definately loose somewhere
Jon