Hello....this is my first post so please bare with me. I have a 1991 Larson Hampton 220. It has the V8 570 motor with duo prop. Last summer I "lost" my outer prop. I say lost because most shops I've talked to say the don't usually just fall off. Anyway I was beached one day, looked down and it was gone. So I ordered the outer prop and cone kit. My problem is diagram shows a "line cutter" between inner and outer prop and none came with parts I bought. Now the shop I have it at are having a hard time finding the right one. They say they can't read the outdrive serial number? Any idea's?