It ran reasonably well considering, but it was rich.
The flange was bent and the slide was sticking (I have now sorted this out)
The clip on the throttle needle had somehow wound itself up past the first coil of the spring, so the needle wasn’t going all the way down.
I’m going to replace the spring, needle and clip with new parts that’s why I wanted to check the main jet number while I’m at it, it currently has a 160 fitted.
I’m in the UK so it’s always cold and damp, at least it is hear in the North East!
P.S. if I fit an insulating gasket, such as the phenolic type supplied by Amal, should I leave the flange O ring in place or remove it?