RE: Excessive smoking on Saito 100
Well, I doubt it's the needle because you say it does not effect the performance of the engine. I would guess it has more to do with the orientation of your exhaust. With the pipe turned up as you describe it is allowing the oil to pool in the pipe a but instead of getting blown right out and it is burning in the header/muffler assembly. To test that simply reorientate your muffler to point down and see if it changes. I understand you orientated your muffler to keep oil off the aileron servo but if you move it long enough to check it out then at least you will know.