For those of you who are having trouble with the new clutch here is what Ive found thats works really well. I used the silver mugen clutch spring and tightened to 1.4mm. Set the end gap to .70mm. I trimmed the corners on the sling weights as to allow them to come out without rubbing each other. Try to experiment using more or less tension on the spring and .6-.7 gap on the bell. I like to take the tension on the spring to the point where the clutch slips and than I back it out a 1/4 turn. good luck