Dissapointing performance

Dusterguy, 3400 is a good starting point for you mechanical advance. That is not set in stone. After your carb and exhaust are upgraded where they're not strangling the motor, that is when the tuning really begins. 3400 would be a good starting point, after that you can adjust to the needs of your motor. Every combo is different. However calling someone on ego is non productive as everyone has tried in their own way to offer advice. Take it with a grain of salt my friend.