You can pull higher gearing with the bigger cc's and even if you find yourself in the wrong gear coming out of a corner just dip the clutch a little and away you go, back up into tractor pulling zone.
It's just a shame that PSB mag didn't give me more time to set the road bike up as it is now making 7bhp more (fueling right now and new clutch plates ) than when it was tested against the RG so I think would go over 145mph or a little more with taller gearing/sprockets.
I have had uprated gears made in the past and have some more on order together with taller 1st gears to make 1st and 2nd closer. There is also a company in Japan that makes close ratio boxes with dry clutches but they work out at around £4000 so it would probably be cheaper to have them made over in the UK but would many people want to pay that sort of money for a noisey clutch ? and no more power, probably not.
Cheers Ian