Thanks again for the helpful tips Seth!! I really appreciate it.
I also thought I should be hitting at least 40 with my setup, but if my pipe tops out around 8,000-8,200, then I am maxed out. According to the e50 gearing/rpm chart, hitting 36mph with 15x45 gearing equates to 8,000 rpms which would make sense considering my pipe maxes out at 8k. I'm gonna toss my 17 tooth on when it comes in, and see how that goes.
The one thing that's been really puzzling to me is that at WOT, I didn't feel a difference between any of my Jets. It feels like there should be more, but it does top out at 36. I've toyed with the idea of buying a vm20 since that's the carb I had on my old tomos and absolutely loved it, but it seems like there are a lot of people who use a bing 15 on reeded bikes with lots of success.
I'm getting to the point where I'm just going to suck it up and be satisfied with where it's at. Hoping the 17 tooth gets me above 40. Right now, it starts first kick every time, idles perfect, and has no air leaks. Not really sure what else I can do.
Because it doesn't 4 stroke on the top end, I did try upjetting to 85. This still didn't cause it to 4 stroke, but made it really rich at idle/low rpms. The one thing I haven't touched is the needle clip setting. I've left that at the 3rd clip from the top.