You will find that "factory" settings are almost always way rich...
"factory" settings are the cause of most engine running problems...
You can't harm an engine setting the carb on the ground..
The high should be set for MAX rpm, then backed off until the engine just starts to slow down..
The low needle should be just richer than the point where transition is good...
We do this same topic over and over, look back through the posts..
Manufacturers are doing new owners a great disservice by not publishing carb setting instructions..
Maybe it's a CYA thing, let the owners fly around using up about 5 gallons of fuel with a plane that staggers all over the sky, then in desperation gets some help with the carb...