Tuning…not easy with a limited coil. Could be fat or lean on hi or lo or both. Mine is ported and has to be fat on the low. Are you familiar with tuning in wood?
A tiny screwdriver…do you have the factory manual?
From the factory, the carb screws are limited in their movement. My limiters were eliminated when I got it…you may or may not be able to adjust it to run properly within the limited range. May be a tool to defeat the limiters.
First, check and make sure you get a four stroke when you lift. Then you know your high is OK. Then, I would try richening the low side….but it could also be too rich. Vids would help. I should mention too lean can melt a piston…
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