Find the right tuning for the LSN and HSN and correct the idle when needed, the idle is basically the last one to set.

That JQ instruction is based on a certain OS carb but you have a REDS engine that is different. Beside that, the JQ instruction of a 0.5mm gap and tune the LSN from there does sometimes also not work on the OS carb, tolerances, different fuels and weather conditions has a lot of influence on the final tuning.