I have a 1991 mariah with a mercruiser alpha one. I am replacing the bellows and the gimbal bearing. everything was going smooth until i attempted to pull the gimbal bearing. I used a 3 clawed slide hammer puller and it didnt move a millimeter. I have also been trying to find a way to make a puller myself instead of buying one since they are really expensive. Does anyone have pictures or drawing of a device that I can make myself? Also, a boat mechanic was trying to tell me that the u-joint bellow he gave me which says "mercruiser alpha one gen II " is the right one. But I thought my boat was a gen I. it doesnt have a pipe clamp on both sides like the one i took off it. its just on one side and the other side is smaller, has a metal ring inside it and doest fit around the fitting. Help me out guys. thanks.