Well according to Hpi's website the HSN is 3 turns CCW (whatever that means) from closed. LSN is 3.5 turns CCW with the throttle lever in the full throttle position.
Personally I can't understand exactly what they mean, maybe you can. Down below is a picture of what I was looking at
Kwong man you always help me. Thanks I wish I could be of assistance to you but you seem to have other mods than me. All I have is the NTC3 Team kit and other than the 12RSS I have MT12!! Thanks Kwong