I'm using the 7k thermast housing but what's this hose I'm pointing at? do I blank it off? tomorrow I'm having a crack at rebuilding the twin 40 dcoe webers I just picked up. does main jets 138, air jets 190, emulsion f64-f47, idle jets 59f21, pump jets 35 sound like a good starting point? The carbs came off a 22r so I reckon the jets in it at the moment will be to big. They've got 33mm chokes. hydraulic clutch is just about done