ORIGINAL: huck1199
I agree with all that has been said; all those variables apply. What strikes me is you said the needle valve is 5 fingers above the carb. Does your fuel have to travel uphill 4''? Seems quite a big distance.
Guys here are some pics to see exactly how my setup is.
It's kinda weird the engine to run excellent on idle,WOT and midrange+transition and not run good once vertical....d@mn it's frustrating.[:@]
http://img687.imageshack.us/i/hinges001.jpg/
http://img340.imageshack.us/i/hinges003.jpg/
http://img503.imageshack.us/i/hinges004.jpg/
And my other loves airplanes...
http://img260.imageshack.us/i/hinges006.jpg/
http://img510.imageshack.us/i/hinges007.jpg/