I changed out a 2 blade brass prop,that was on my 1975 Merc 850 85hp,to a 3 blade Quicksilver lightining thro flo with a 19" pitch ss prop that i had on a 2004 90hp that was on a boat that i use to have. It's on a skeeter strada F80,15 ft that weights about 700lb empty.It comes out of the hole...