just got the shee bored and got wiseco pro lites. In the piston boxes came a green sheet that says for 2 stroke M-series pistons you should drill 2 small holes according to the instructions for lubrication. No where on the boxes does it say that i have M-series pistons, the only M is in the part numbers on the box. Question is, do i have m-series pistons? Im wondering if i should drill these holes or not? thanks