Here is where I got my jets for my stock carb, this page showing the exact series that fits the stock carb. Pretty sure 105 is the stock size, I bought a 108 and 110 and currently running the 110 now that I'm on premix. That said once it get's broken in fully I may experiment.
The headlight option might work!
The MB5 "commercial" is very cool I've never seen that before ever.
I had heard that once the bikes started to just sit on showroom floors they even discounted them lower than that.
Call me if you do another Trace run...