First time boat owner, I have a 2005 four Winns horizon 200le with I/O 4.3 Volvo penta) that Ibought used. Previous owner put an different size prop (14 1/4x21) I bought the stock size prop ( 14 1/4x23)as the other one had damage. My issue is that if I tighten it any more then finger tight it binds up does not spin and the book calls for 70-80lbs tq. All the parts are there…thrust washer, propeller, washer, nut and the nut lock with pin. Anyone know what my issue is or what am I possibly doing wrong? Thank you