Oz. As long as the ramp is allowing the lifter to reach the highest point on the cam, the only other way to bring the revs at idle down lower is another washer under the cam, I have to do this occasionally , most work ok with the 3 washers I use. The higher you lift the cam the harder it is to get the cable ball entered so I usually only connect the cable on the first notch, if you try getting it into the second notch it bends the cable and creates another issue There is no oil breather, that is the governor that is no longer needed because you are taking control of the revs using the throttle lever. Don't get too concerned about the high revs if you open the throttle too much, this is a Victa 2 stroke, they don't throw rods like all the 4 strokes
