Even the mechanics thought the jet I ended up with was small. Before I changed to smaller jets, it would try to clear out but you definitely had to let off and then get back in slowly. Now it deals with full throttle a little better, but you still can't give full throttle till the engine gets revved up a certain amount. Is there anybody I can send this engine to so they can get this thing setup to get more hp's out of it? Is there any possibility of getting power valve numbers from this engine?