I got a 48" cutter from Attwoods when I purchased my Summit tractor and it came 'some assembly required '. I've gotten it all setup except for getting the drive shaft onto the gearbox shaft. I've removed the ring and shear pin off the gearbox shaft and I incorrectly assumed that the drive shaft u-joint would just slide onto the gearbox. Will adding grease to the gearbox shaft do the trick?