Hi Folk's I recently pulled down a os 60 open rocker which I purchased, to check for rust, there was a little bit in the motor, but when I pulled the back of the engine off, I noticed that there is 3 dot's in the shape of a triangle, I think that they form a upside down triangle, one dot to the bottom. does any one know if this is the correct timing ? any help would be appreciated ! thank you ! Darryl.