I have been running a VP-30 Perry pump on mine. The engine is on a World Models 1.20-size Extra 300. I have the tank mounted near the CG, so there's about 15" of fuel line from the tank to the carb. I'm using a BCM pitts muffler with NO pressure line running to the tank as per Perry instructions.

I had to lean out the high-end needle considerably to get the engine to perform with the pump. I also leaned the low-end for a consistent idle. In any attitude, the engine runs consistently at high RPM. The midrange is rich which is obvious from the burbling during mid-to-high transitions. I tried adjusting the pump to correct this, but it seemed to make very little difference. I am planning on purchasing the Perry carb (pump version) and hopefully this will solve the problem.

-Tom