Hi Jay,
The one thing you can check easily if you
have not already done so, is to make sure your throttle linkage is opening all the way.
Simply remove the flame arrestor,open the throttle all the way. The primary blades should be sraight up.
Push on the secondary air valve to make sure it's not binding. Do this with the engine off, BTW.
Are your WOT RPM's over 4000?
Greg |