has anybody ever fixed there own countershaft leak?? mine is leaking behind the front sprocket and i ordered the parts so im going to attempt this myself....is there anything i should know? to do or not to do??? that is the question.......i read the basics on a yfz fix on yfzcentral and he said the mechanic lubed the seal and the o ring and collar up with something but didnt know what it was....anybody got any words of wisdom???