I am in the process of replacing my boat's engine
. It is a different engine
and tranny so they will have new mount locations. The new coupler is 1.5 inches longer than the old one and there is not enough room for it to be flush with the shaft. Two options, 1) cut the new coupler down and redrill the set screws or 2) let it stick out past the end of the shaft. It has a key and two set screws. My question is, Will letting it extend 1.5 inches cause problems? (extra torque on the key) Thanks for any thought on this. By the way, the new coupler is much beefier than the old one.