13 -1!!! Man! Can see that it would be rough on starters. Wondering have you ever tried running it on racing gas like VP or Cam 2, etc.? 93 unleaded is cuttin' it close. Thinking about back in the day when there was Sunoco 260 - and it was easy to find - wish we had it now.
Don't let that bike get the best of ya - Like horses, the ones that can really take your breath away, are always the ones that are the biggest PITA.
Have a good one D&H;
D.B.