Take the carb off the engine and open the barrel all the way. Looking in the carb from the bottom you will see the spray bar on the HSN side and you will see the tip of the LSN on the other side. Set the LSN so there is a small gap between the two, do not worry about how many turns it ends up being. Set the HSN to 3 turns. Put the carb back on and try to start the engine. this should be close enough to get the engine running and up to full throttle. Adjust the HSN at full to peak RPM and back off 1/8 to 1/4 turn. Now bring it down to a fast idle, remove the glow igniter. If it sputters and stalls, you are very rich and need to screw the LSN in. Adjust 1/4 turn at a time. If it drops RPM but runs for a little bit you are a little rich. Adjust so the RPM drop when taking off the glow igniter is just noticable. This will get you very close.