Hi again guy's well i finally got my Skybolt almost finished ,( i hate it when work[:'(] interfears with play ) any way i installed the skywriter smoke pump first try not much smoke at all that was with a O.S. FS-91SII-P with the stock muffler and stock nipple location which is a little far from the engine so i guess it's loosing the heat needed .So i went and got some of the small copper 1/8" diameter tubeing and wraped it around the muffler about 6 or 7 wraps and used fiberglass tape like the kind used on wood burner doors and wraped the copper tube then wraped the insulation with coper doorbell wire and then covered that with the metal duct tape like they use on a furnace now she is smoking pretty good i have yet to maiden the plane because i just couldnt bring myself to fly it without the SMOKE i am going to try and fly it thursday i will try to get some video of the maiden flight.

P.S. : I used two of the DoBro fueler valves one for the fuel and one for the smoke tank filling .
after running the plane a little it would shut off and run eratic !!! Brand new motor then i found the problem is the fueler valve letting AIR to be sucked into the fuel line as long as i put my finger over the fueler valve it ran fine as soon as i removed the finger i could see the AIR BUBBLES start to come and the engine would start to run rough again.

Is it best to just use a pluged fueling line or can this problem be fixed and How do i do it ??