I nearly bought a bird book in that charity shop in Ludlow while you were all sat outside the Costa coffee in the sun.
I have no idea what you are on about AL. I guess your saying I am a retard that needs his head retiming. In which case you're right as usual.
Are you running a standard solex ? This sounds typical worn throttle shaft bushes, will always fire up cold but struggles when warm. Will cause lean running which is why your engine is running hot, as engine warms so the tollerance between shaft and bushes will increase so when you try and start your hot engine you are pulling to much air through shaft ends.