hi guys. I am rebuilding the top end of my 96 250 and I have a couple of dumbass questions, that I should know but don't. this is my first rebuild, and I know enough to be dangerous. I don't know which is the number one piston, sitting on the bike is it the left or the right? also when going back with the camshaft, the lobes that make contact with the valve rockers, should they be up or down over the number one piston? I`m trying to get the timing right. any help would be appreciated, thanks.