I think you have the HSP and the LSN mixed up there. If it sputters and bogs from a stop it is the LSN.


A rule of thumb I use is i clear out the engine and then let it idle until I hear the idle drop. a good setting for the LSN is a drop in idle in about 9 seconds. If it drops earlier it is a little rich on bottom if it takes longer it is lean on bottom.

NEVER use you radio trim to set your idle. Use the idle screw on the carb.
NEVER tune a cold engine.

Adjust idle AFTER you have the HSN ans LSN set..

Start out with the engine at tempature. get the HSN set then work on getting the LSN set, then adjust your idle. The gap doesn't really matter as long as it is idling.

Make sure you have a clean air filter. A dirty one will change you needle settings