How often should the gear oil be changed? whats the best type to use, and any idea how much i should put in, Im new to 2 strokes as some of you already know, but was thinking of change the gear oil but have no idea how much to put back in.... i had a look at the cap and its one of those pointed ones, is that the limit when the point gets wet???? Oh yeah is there such thing as a haynes manual for the MC's is there a good maintenace manul i can buy??? any help appreciated, many thanks