There really isn't any way around that. Once you turn the full power screw in too far, the engine will "run away" because the governor cant controll the fueling. That is one of the downfalls of the ve pump. You can try to reindex the throttle lever back one spline so it twists the throttle shaft back farther towards idle and see if that drops it any, but it may already be moving the gov assembly all the way back. The main fuel screw isn't realy designed to go all the way in, or bottom out. Pretty much you can turn it in untill the engine wants to run away when you rev it (or start to hang at upper rpms) then back the screw out a 1/4 to 1/2 turn. Thats the max fueling the pump will give.
Jason
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