Sweet - glad I could help
If you still need a lot of choke to keep it idling once the temp guage starts to move off cold, then
maybe you need to look into the carby - are the jets blocked or grubby? - but what I'd look at first, is the ignition system. Are you really getting a good spark at each cylinder for every compression stroke?
A bodgy ignition system will cause untold havoc. Is the rotor, the rotor cap, points and condenser all new? (assuming a standard - points ignition system) - Then how are the HT leads? - in good knick and tight on each post? - How is the coil?
Battery well charged and got clean, tight terminals?
A known- good ignition system will make a world of difference to the reliability (& starting of the engine)
There's a full diagnostic process written up and referenced here :
http://www.teammightyboy.com/forum/view ... =29&t=6023
Bit of reading there, but it will step you through what to look at to get your 'boy purring sweetly...
Cheers