Caleb there is probably 10 different cams I have seen, Victa was obviously to solve the problems with them. The lobes I cut back are the ones the lifter runs up and down on, as you can see the poppet is shut and then it drops down sharply into the "V" so it goes full throttle. By gently sloping it back you can control how far you want the poppet to open and this controls the revs