[cameron.arnott]

OK I think the problem might be solved....

Today I pulled off the right carb and pulled it apart, nothing obvious there. Put it all back together and put it back on the engine using the correct gaskets and......what the? The engine gets warm and i turn down the idle and I don't believe it but I think the problem has gone. Took it for a good drive and got it nice and warm, the idle still hangs slightly but I'm hoping this will be fixed when I replace the gaskets on the other side.

I had previously used some gaskets that I got from the carb shop that were a lot thinner than the genuine ones. I'd never been able to find a leak by spraying carb cleaner but maybe this is one of those little things that make a difference?

Thanks to all of you for your help and suggestions.