For what it's worth:
I'm 70 yrs old; weigh about 135, and I ride an unrestored Combat. On LL 100 octane avgas it starts first or second push every time. My experience (over 40 years with this bike) is that you don't KICK a Norton anyway. You push it through till it's on the sweet spot and just stand on the "kickstart", and the sucker fires up. If it doesn't, something is wrong.
Somewhere on this forum is a short video of someone (Comnoz?) starting a Norton with his hand! Don't remember if it was a 10:1 or not, but that was cool. One of these days I'm gonna try that, if I can do it I'll get the wife to video it and post the results.
Seriously, I love kickstarting my bike. Wherever you park a Norton there is going to be some admirers when you come back. And it really gets their attention when you fire it up with your FOOT. I know I'm probably senile, but I just love that .