i used a fuel dot on top and one on the bottom. fueling from the top, air and excess out the bottom. works like a charm! you can see the one on the top but the one on the bottom is not visible.

i've used refuelers before but never got them to work well with 2-stroke engines. with 4 strokers the fuel is pulled easily into the engine but with 2-strokers the need for the exhaust to push the fuel to the engine may be an issue. the refuelers (including a few from dubro and some china-made copies) tended to let in air after a while. just my experience.

if you want to be safe and don't mind compromising the looks, this setup from WM is excellent.

http://www.theworldmodels.com/para/p...id=74&subcat=0

i used it before on a squint scale before but find it a bit too obvious for my other planes.