I wonder if it’s possible to wrap two O rings around the advance ears to limit the bob weights. Or even some heat shrink tube.Yes, maybe some new weights from Mike's will fix you up. The wear on these units usually occurs to the little tabs. The sharp corners on the slots in the little center disc that the tabs stick into cut into them over time. So the unit ends up retarding more, not advancing more. But the overall effect is the same - a greater amount of total advance .....