skippystahl,
what up man, i had a similar problem my engine wouldn't stay running it just shut off. i was not pulling fuel. i checked my carb and it was loose, the screw was tight and the carb would spin in the engine it not right, so i took off the carb and the sleeve that was pressed into the engine was twisted and cracked. i sent it to cen and they said the cracked sleeve that was pressed in couldn't be replaced and pieces of metal from the sleeve had fallen into the engine and piston sleeve... They had to send me a new engine i just got it yesterday.