Hi , i had 2 bikes , 1 with mc 28 carbs and 1 with bored 21 carbs . After we bored the carbs both bikes were allmost identicle on the dyno . The 28 carbs were unbored .
I have a few graphs of my 300 vs my trick 250 if you are keen .
We have sorted out the teething problems ,
I LOVE MY 300'S POWER