It sounds like an ammo issue as remington makes the second worse rimfire ammo available, but it also could be that a few parts might be worn out. If you are having a fail to eject your extractor might be worn out. $12 for a new VQ or PC, or if you have a dremel with a metal cutting tool you can reshape the edge, doesn't always work but it usually fixes the problems. Heck, the extractor might just be really dirty. If you buy an extractor go for a bolt buffer at the same time, takes a lot of the noise and vibration out of the cycling.
Your magazine might be at fault also. It aids in the ejection process and if it is worn out then it can cause problems. The spring can get tired also, a quick tightening will do wonders. If it is dirty, clean it but leave it dry.
As for the 60, they are great guns. I own four right now, and if anyone believes they keep ticking without maintenance they are sadly mistaken. I have two right now that are down waiting for new hammers. Ejectors bend and the buffer can bust. Plus, they can be downright picky on what they like. But, when they run they run awesome.