Here's what's happening: when I shift from 2nd to 3rd, it generally makes a noise similar to when the chain falls off of a bike (this is when i see it partially make it on to the 3rd gear but then fall off to the 2nd) and takes a few revolutions (sometimes up to 5 or 6) before switching in to third gear. I was thinking about oiling the chain, but I wasn't sure if that really would help at all or just be a wast of oil, but I guess that is what chain oil is made for!

Shane