I bought a Thunder Tiger Eb4 S3, and it came with the LC21 B7, My question is, I have NO manual or docs on the Carb, (NO luck searching the internet for docs) what I thought was the LSN, might have been the Idle etc...All I know now is the HSN, and I have taken the needles out and cleaned them,can anyone tell me Which needle is What? LSN, Idle, and Midrange needle? I do have Pics I can send up, I'm new to Nitro, but have running Electric Mod 1/10 Scale for yrs.THANKS, any help would be appreciated