Thanks for all the advice guys...

That's the nice thing about this forum... If it's happening to me, it's bound to have happened to someone else before...

I'll try the most obvious things first, like changing the glow plug, cleaning out needle valves on the carb and re-adjust the mixture again... I really don't want to pull the tank if I don't have to since it will require minor surgery to do so...

It's just so strange though... One day it runs fine, the next nada...