Invaluable advice Ron, thank you!
I have done the timing again, a little too advanced, as it kicks back at me when I try and start it but easily rectified with a very small amount of retard on the hand control.
I have also....
Added a new plug and gapped it.
Stripped and cleaned the carb, all components, apart from the slide are new.
Set the needle.
The plug is still sooting, so as you have suggested Ron the slide maybe warn, it appears to run pretty well, as for getting hot it’s hard to tell if that’s sorted, I guess really only a gentle ride will tell now.
The good news is it appears I don’t need to ride it around now with the air slide half open 🤗
Maybe I just didn’t paint the exhaust properly and that’s why the paint come off......🙂