I busted my prop on an older Minn Kota motor labeled Weedless 95 36lbs thrust. If there were any other numbers on it they have rubbed off. I ordered the MKP-6 prop for a 3 1/4" motor diameter but its diameter and 3/8" bolt hole are too small for my motor. I measured my motor and its diameter is 3 7/8' with a 1/2" bolt hole. I'm thinking of ordering the MKP-8 for a 4" diameter thinking a little too big may be OK. But I don't know if it would also have a larger bolt hole. Any ideas on what prop might fit?