JD-
Good suggestions here. Do what you can to get the tank at or slightly below the spray bar, use a good glow plug. Can I ask what size/make engine you're using? And in which plane?

The only downside, assuming you break the engine in and tune it correctly, might be that it's tough to get as low and idle as you want. As an example, I have two Saito 1.50 one on an Extra 300 and the other on a 1/4 scale Cub. The Extra is no problem. But the Cub, due to it's low overall weight, liked to roll at the lowest reliable idle I could get (about 2000rpm). I then installed a glow driver, the reliable idle dropped to 1800 and all is well.

Augie