have a couple of dedicated 1911s with Colt ace conversions! Took them out today and could not get firing pin to hit on one with light main spring , other one had no problem. What are best weight springs for a dedicated 22? Also had problems with magazines staying locked in place, one would slip out after firing first shot outher stayed locked but had to keep little finger under it or would get jams( slide hitting case about center on case. Both guns were made in the early 70s and the one that has the most problems was never shot. And still has net been shot.