Hmmm, yes, I didn't think of icing, anyway it's had a good dose of WD40. I used to have an aircooled VW Kombi to which I had fitted an after market Holley carb, and had icing problems, solved by redirecting hot air off the fins of one of the cylinders I believe.

I don't intend to be using the 5 speeder too much in cold weather anyhow................

Paul
[At last, I have a car I can polish]