So my son is a little to small for an lt80 (he'll be 3 next month) found a nice 2005 lt50 needs crank seals replaced. Anyone ever work on one of these and have any input on replacing crank seals? Do you have to split the case to do it? Or is it like bigger bikes and able to access the seals from the outer case openings? Any input will be appreciated going to pick this thing up either way I think its only $450 and super clean.