83cc BBK A9 cam problem

[DisillusionedPrepper]

That's great to hear. I'm glad you found the culprit.

One thing on "plug chops".
Four strokes are not really going to show much, if any color when they are tuned correctly. What the chops will tell (on a 4t) is oil consumption.
I ALWAYS start fat on my main, and work down until you feel the improvement. Then fine tune the needle position/shape/taper untill it is at its best.

Another way to approach it is to use torch tip cleaners. They are tiny round wire files used to clean slag from torch tips. (DUH)
If I don't have or want to order a jet, I'll use the tip cleaner to open up the jet I have. One wire size at a time.
If I go too large I fill the jet with solder, and start again.
Basically this is a one jet fits all approach.

Anyway... Glad to hear you're on the right road.