Make sure you are not having any air leaks.
Check for any fuel("fresh") on the engine after 3-4 tanks and try to spot the leak.
All carbs are different...some need 1/4th increments some need only 1/12th.
My previous OS required 1/12th adjustments at the HSN and 1/8th-1/4th at LSN.
The GO requires 1/8th-1/12th for both LSN and HSN adjustments.

These are for fine tuning.If you are way off then go with 1/8th and 1/4th.