This thread has been one of the most helpful in getting my Tomahawk running smoothly. The issue I had the most difficulty with was the proper adjustment for the clutch. The tension screw needs to be 3/4 to 3/16 exposed when the lever is engaged, that setting along with a kevlar reinforced belt and a couple of other adjustments and I have been chipping, chipping, chipping. So far I've gotten about 10 yards of chips without a belt failure. I made a video on what I did as it's kind of hard to explain without visuals -
YouTube