Originally Posted by Rudolph Hart

CDRC the above is very good advice,we've all done a flying tune (very different from running it on the bench) on a saito inverted in an arf with a high fuel tank position and there are many things you can do,so you end up with a smooth and powerful saito in your arf?? if you answer some of the above questions in a bit more detail it's easier to help you,pics are good too.
ps jim the small fine white fibre is not plastic,i use dubro or sullivan tanks and good fuel line.