I have a 1991 48 hp johnson and am trying to repair the gears in the lower unit. I am unable to remove the bearing carriage. I have the three bolts that hold it in place and have been unable to budge the carriage. I have tried a wheel/bearing puller and a slide hammer without luck. Any suggestions or tips to try to pul this bearing carriage is appreciated. It is a long shaft engine. Also, if anyone knows where I could get a new lower unit for this outboard, it would be appreicated.