Not to hijack this thread but, I pulled my trans out today to clean/lube the splines. The youtube videos
Chris Harris has posted are helpful for a newb like me. Everything went well until I started cleaning the boot and I found this:
Looks like this is where it came from:
I know this bike was put down pretty hard before I bought it and I've never heard any noises out of the drive shaft...how much should I be worried?