It's hard, to get everything right
if the HSN is set incorrectly u will never be able to effectively set the LSN and idle screw.
if the LSN is off u will have idling issues that can not be resolved by the idle screw
if the idle screw is off it will have issues than con not be resolved by the LSN.
my recommendations, check the idle screw adjustment visually if its around 2mm open, don't adjust if the car start
recheck idle air gap with the radio and receiver on, make sure it does not close further with the brakes and does not open it further when the trigger is neutral
if the car starts and runs, ignore the idle (proving u can safely stop it) and set the HSN for max speed with a few speed runs. Once u find that speed spot for maximum speed, richen the mixture 1/8-1/16 of a turn
now tune the LSN, in small 1/8 increments untill u can hold full throttle with out it stalling or bogging down. But... If u tune the needle more than a 1/4 of a turn and it improves, stop and retune the HSN, then once that's done continue back on the LSN. Allso at this time it's worth fine tuning the idel and doing a pinch test...
tip, only drive it to tune it, don't play until it's tuned. Otherwise it can heat up effecting the tuning. And if it's been 5-7min or so and it's still got problem, stop