I'm trying to fix a model 60 that will not eject. I find no part listed as "ejector", although there is an "ejector lifter spring". Is the lifter also the ejector? The lifter does not come up far enough to serve as an ejector. Also, with both right and left extractors, i'm a bit fuzzy about how the ejection is supposed to work. There is a fixed part, that's in a slot in the boltface that looks like it could be an ejector, but it does not quite contact the case head. I'll be grateful for a brief desctiption of how the extraction works and which part I should be suspecting. Thanks.