ORIGINAL: millertym2000
Ok I put a 1/2 tank in the plane and ran it on the ground then at wot put it nose up and down and on its side ect.. and once it ran for a while it did die on me with the nose down and the clunk not getting any feul.
Bare in mind that unless you go to a completely different type of tank/plumbing combo, there is little that can be done about fuel starvation ( other than richening the mixture even more ) once the tank has about 1/2 to 1/3 fuel remaining.
Some people use header tanks, or resort to bladder tanks to solve this problem.
It's plagued me to no end with my Funtana s90 until I went with a header tank.