I need to replace the bevel gear and or the pinion gear in the gear head. Problem is that I can't get the unit apart to get to them. I've looked at an exploded parts view and I need to remove the bottom spacer to get to a snap ring. I can't get this spacer out. I don't see anything holding in and I don't think it's pressed in.... I can't figure it out. It's the bunp head side (not the shaft end) that I'm working on. Any help is really appreciated. The gears I need to replace will cost about $40 at most - if I have replace the whole assembly, it's gonna be $110! Need your help Thanks!