I was riding today and all of the sudden it was like the brakes came on. I cam to a stop and let it run for a minute and it went back to normal. I really didnt think anything of it. I thought I may have just gotten another glove caught in one of the sprockets. But, a little while later it did it again and I totally lost all ability to go, forward or reverse. The clutch appears to be working, as it will start burning the belt when reved and appears to be contracting as it should. I thought the transmission might be locked up but we were able to push it forward while in gear and everything appeared to turn normally. It is like the t-20 main input shaft is too much of a strain for the clutch to turn it. I was riding last week and my belt started chirping but I thought it was just because the belt is older and about ready to be replaced. Has anyone out there ever experienced anything like this? Or, does anyone have any theories? Thanks in advance for any tips.....