We had that sort of problem in 2001 with Peacemaker. This is what we ended up doing:
http://www.chiefdelphi.com/forums/pi...&quiet=verbose
That little red strip under the lexan panel is a piece of plywood that was cut for our timing belt. It puts pressure on the entire length of the belt, is easy to do, and doesn't require much time to machine. Of course, it is crude, but the belt has never cut into the plywood (just got worn off by carpet). We attached aluminum angle to the side of our chassis and flat-head-screwed the plywood into the angle pointing down.
We've never had to replace it since the 2001 season started, and it's worked very well. I suppose Teflon would work better, though.