Hi Im curious of anyone makes a bolt on T belt guide that will keep Belt from walking off the end of Cam sprocket? I'll be on the road for a few days (with this 89 TD Van) Been having the usual Belt probs....loose or tight it keeps wanting to walk off the edge away from eng....(its currently a lil loose but not flapping too much, but can push belt over with hand). ...fun times. I would think a bolt on guide would while you figure out whats really wrong. THX!