Brickhead,

I have seen mixed results with the VP20,....I think for the most part some of the people I have been around that had issues with it didn't follow the pump mounting instructions. That's an oscillating pump and needs to "shake" to help make pressure and pump. The VP20 has less tollerence for deviating from the recommended mounting method. I would follow the instruction on mounting the pump and put the tank on the CG and give it a try. You will know if it's not going to work well when you hold the aircraft vertical,...see if the engine sags or falls off,..make sure the engine is running a nice needle setting while on the ground,...good transitions first.

Hope that helps,.....


Regards,
Bill Holsten