I bet 100 bucks it is an assembly error. It is tricky work juggling all the do-dads together while pushing up the mainspring and pinning it. I bet it is the leaf spring. It is either mis-installed, or bent out of configuration. Both are easy to do.
Youtube '1911 dis-assembly' there was tons of vids there to help me
good luck
Youtube '1911 dis-assembly' there was tons of vids there to help me
good luck




















































