....Mike....I have a habit of giving full throttle when I go vertical....

....but that's just me.

BTW....when your engine is leaning out....leaning out the low end further
won't help....trust me....I'm a "carb man" from way back.

Turning the low speed screw "in" does nothing but restrict the mixture
from the already pre-adjusted mixture of the main needle/nozzle. The
low speed needle doesn't really adjust the mixture, there is no low speed
"circuit".

FBD.