01 banshee, ported, milled, reeds with spacers, 320 mains, clip third position, stock carbs with toomey 2-1 air cleaner, spark plug check looks fine in all areas of throttle position, my question is the bogging of start when racing, after bogs, runs like lighting, are mains to big or do i need larger carbs? have tired smaller main jets (310, 300) still have bog problem but it also has it on top, 320 took care of problem on top, tried different clip postions and third came up best place, any ideas,
thanks..........

 

Might be your port work, the more you open up the exhaust ports the more bottom end you will lose.... But its runs much better on top end..... Did you have drag porting done?