I was thinking the same thing but I have to use the decompression valve. When I hold the pushrod in place and move the kicker I can see the valve opening up so I'm not sure if that's it. But it sounds good so far. It's using compression valve and the valve opening thing that's holding me up so far. If the valve was bent that bad it wouldn't work at all. Does anyone have a picture of the rocker arm end of the exhaust valve so I can see how high the stem should stick out from the retainer spring? That would help with one answer.