As a result of a PM asking about whether or not a Perry Pump would stop fuel siphoning, I decided to try it and see. I have two Perry's in service, but on one there is just straight pipes which precludes muffler pressure, and on the other the distance from the tank to the engine is too far. Neither has the tank centerline well above the spray bar. This will be no surprise to folks who have tried it, but may help others decide. On both the VP-20 and the VP-30, the fuel started running through the pump as soon as a head started to develop. My conclusion is a Perry is good for a low tank but not so good when used when the tank is high.