dishsoap I faught with my .24 on tuning . first set the idle gap where the gap is a small as you can.5 mm (barely cracked). Make sure your hsn is flush at the top of the housing and the lsn is flush (both will be rich). set the low speed frist get the motor to idle with the lsn. set it on the ground my sure engine is warmed up and pull a couple hole shots. lean engine on lsn till it has a good punch. then lean the hsn til it runs though the rpm range. you my have to richin the bottom a little. but not much. try it at this point you have nothing to lose. these motors a picky about the lsn and the idle gap. once you get it set your done. hope this helps