I'm having difficulty removing the drive shaft from my 1995 Force 40 HP motor. I've removed the lower unit, water pump, propeller, and propeller carrier/shaft. I also removed the drive shaft pinion nut. According to Clymer, the drive shaft should be free to be removed. I've tried mild tapping on the upper part of the shaft to no avail. I'm thinking that the pinion gear is stuck to the drive shaft. Is there a trick or tool to remove it. Any help is greatly appreciated. Thanks!!