Hi Max,
carbys on both these machines are original, I blow compressed air through the inlet pipe, polish the needle seat, so I don't believe the flow is the problem. All I do with the emulsion tube is blow through it so I can see through it and put the wire brush through all the holes in the tube. Maybe the hole through the tube is restricted even though I can see through it. Both were badly rusted up because of E10 and once I put it through the ultrasonic I got both main jets out without problems
