I need help!!!!!!!

I have a 2006 e-ton (identical to a bws) it has a 70cc malossi racing cylinder a 19mm carb a high flow air filter a high flow exhaust and I just put an ignition key to advance the timing and I melted the piston I need help with the size of the main jet.

 

Is it air cooled ?

 

Yess

 

Yes

 

A/C engines don't like to have the ignition timing advanced to much, it builds up too much heat.

 

Can i still run it whit the timing advanced?