Approx 30 years ago I bought new a Auto- Ord 1911. I left it in the box and just recently pulled it out to use.Cleaned it up and went out to shoot it. The problem I'm having is, out of every clip I will get 3 or 4 failure to chamber. It extracts and starts to chamber but is not completing it. It stops 3/16 to1/4 inch short. Sometimes I can push the slide foward to finish sometimes not. I checked for roughness on the guns sliding surfaces and noticed some on the ejecter and stoned them smooth. I also tried to streach the recoil spring in case it was set from sitting over the years. All to no avail.I guess I will get a new recoil spring and try it unless someone one has a idea.