Recently found a slightly old (and very dirty) Marlin model 15YN youth gun. No magazine just a single shot bolt action. Fun gun. Problem is that it refuses to eject. I've done a very thorough but basic cleaning on it that did not help in any way. Anybody got any ideas? After a quick google search I found a replacement bolt that says it'll fit the gun (though it doesn't look the same) for $24.95 but I'd prefer just to get the original bolt working again.