OK guyz put another 1/4 gallon through it today and it seems fine ran two tanks flat out over jumps and straight line
I did change the plug for a colder one and also put some nylon stocking material in place of the air filter (the nylon was the girl friends).
so my next question is whats the maximum gearing this engine will take without losing to much top end i want to get maximum acceleration will the Savage gearing fit .
The Nubz are awesome major difference in response.
Royz