ZSteele wrote on 04/05/20 at 17:59:18:Threw the VM38 on there for shits. I've got Lancer down recommending 166 Q-0 needle, 17.5 pilot and 185 main for a suped up VM. I'm close with Q2NJ needle, 17.5 pilot and 200 main. There was one thing that I noticed was peculiar. After a few minutes of riding the idle speed jumped up from 12/1300 to 2400. Just pegged there. Is this a symptom of the jets being that far off or could this help identify some other issue?
You may have had a speck of something in the fuel, in the line, on the carb, etc. If it is adjusted ok for now then leave it and see how things go for a little while to see if the issue returns.
If it is not running well then something is interfering; piece of grit, loose bolt, cable. The carb setup should function well.