It always helps to cool off a bit and then take stock of what's happened.
It's still a downer and I'm sorry for you - they couldn't have timed it worse...

What you could do is study the porting on the 500 barrels and take some ideas and apply them to the 400 barrels. Build the motor up in 400cc mode and have a good time at the trackday ? At least you could blow away the moderately fast for fast RD's on the staights as well as the twisties..


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These aren't the droids you're looking for.