Quick questions: On the main axle under 4th gear there is a collar with 2 oil holes. Does this collar have to fit on the shaft in any particular way so the oil gets distributed? The manual says to just install it, but I'd like some reassurance that it doesn't matter. Its #8 on this diagram Also, the primary drive gear that rides on the crank next to the balancer drive gear. Which direction should it face? (pg 4-59, #4 in the manual) There's an end with a groove and 'C' engraved in it and the other end has no groove. Which end faces outward? Thanks.