I recently got back into a tin, bought a 14' Smoker Craft Voyager with a 15 johnson.Boat has a 20" transom, and the motor is a long shaft, but it seems too high.Anybody have to cut down their transom for a Johnson?I know outboards are not all 20",mine is about 18" from the mount to the cav plate.Its not a short shaft(I have one and checked it against this motor).Should i take off an inch and go from there?The prop blows out in waves, and when you reverse, it just pushes water agains the transom.OR get a jackplate?Thanks!