Wayne:

The concept of the pressure and pickup line being on the same clunk baffles me a little. Wouldn't the pressure and flow cancel each other???

I know what you are saying about the fuel loss through the muffler. I suspect there is some. The throttle was so steady and predictable, I don't think I was loosing any through the carb. As I mentioned, I tried the check valve in the pressure line, and that did force fuel into the carb. A bleeder valve of some sort that directs the fuel somewhere else, maybe to a 1 oz. tank that is open to air pressure, is the only solution I can come up with. I don't think I lost much fuel throught the muffler, as I was still up about 10 minutes (10 oz. tank) and I did not notice excessive oily discharge on the tail.

I am anxious to hear your thoughts after playing with the setup. This setup may even tame down the engines without the carb modification. Well, ...maybe that is hoping for too much.

Dave:

I have thought about those bladder tanks too. If I am figuring right, the expansion of the bladder would be a lot like the pressure relief valve I am proposing.

Andy