I'd definitely try a new glow plug. IF MC Coy plugs are not available to you, try an OS A5. If it's still floods out, gently turn both your Idle and High mixture needles in until they stop I can not stess enough don't wrench them just turn until they give just a bit of resistance then re -set them to factory specs. If your motor has a midrange needle on the side of the carb leave it alone unless you've already turned it if so try to put it back to factory specs as well. If at all possible you should invest in a good temp gauge ASAP. This will help more than all the advice you can read.

Good Luck

NITROZ