Power Master 20/20. Tank is inline with carb. Nothing has changed other than the worn out engine that WAS on it. Replaced with same size Saito. The old Saito was running fine other than the grinding of the bearings. So I don't think it is tank set-up. I haven't heard of the uni-flow, but I will look into it.
Also, not sure if this is a player in the equation, but this is the fuel valve I have on it. Glow version
http://shop.dubro.com/products/produ...1.1.0.0.0.0.0?