Hi all

Well I swapped in a borrowed 650 AVS and the car purred like a kitten

- no surging,
- no variation of vacuum (held steady at 14 and didn't sag after blipping the throttle)
- Even the idle mixture was perfect and no variation on the AF guage.

Seems its clearly the TQ and not an intake Vac leak.

So -

This means I have to get the TQ working.

Dave - thanks for chiming in - what sort of base gasket should I be using?

(I know the jets are too big - that was a desperate attempt by me to try to get the idle/low speed circuit driveable)

Any tricks to get the idle circuit flowing a little better?

I guess I could elongate the idle slots a little - anything else?