Hi Grumpy, have checked the fuel flow rate and there is a nice staedy flow, so all is good there. The float and pivot mechanism both work well with no sign of sticking. Couple of curious questions.
1. When checking the float level height, with the carby in a standing position do they actually mean to measure from the bottom of the float to the outside ring were the fuel bowl sits, with the float held up so the needle would be cutting off fuel supply,,, or do you hold the carby upside down to get measurement. Would it make any difference.
2. Were could i find the right main jet size.
3. The idle mixture screw, is that the one i spoke of earlier and you said not to worry about it, i'm guessing it is about time to start worrying about it.