This is definitely a change I will make eventually because 1st is stupid short. Runs out of revs much too quickly when starting from a standstill, and the bike is pretty much impossible to stall anyway, with so much low end torque and a clutch engagement over a very wide range.
What I don't get though is why the difference from 5th to 6th is so small? You are turning just over 4k at 60 mph (indicated), shift up, and now you are turning just under. Like, JUST under. I think they botched this a little in the design. According to the manual the difference when you shift from 5th to 6th is 1.040 to 0.962, which is 7.5%. So at 4000 rpm it drops the revs by 300......from about 4150 to 3850. I mean, why bother?