HELP my engine wont pull

[aj]

The problem: once engine is hot it starts missing and wont pull feels like fuel starvation.She's fine untill the temp comes up.
right then it started of I thought there was dirt in the carb so cleaned float chamber a bit of silt nothing really. Tried it again no change.
So took carb off completely and cleaned thouroughly thought there might be something either in the pipe from float chamber to jet or in the jet, I forgot to mention earlier that when it occurs I pull the choke out and it's a lot better.So after cleaning the carb there was no change.
Checked point gap, changed plugs and air filter still the same.
Anybody got any ideas please. As I say she starts fine runs great untill temp rises.

[Phil J]

might sound odd but have you got a spare coil you could try? Mine was the same when i bought it, it had the wrong coil on and once changed it was fine. A knackered coil could have the same effect I think.

[aj]

To be honest Phil I think that was going to be my next try thanks a lot Phil