Is this the 1/16 Inferno? Stock setting on most nitros are HSN: 2 1/2 turns out, LSN flush with carb and making sure you have a 1-1.5mm opening in the carb. Try that and let me know how you do. I always read that the LSN sits flush but even my LSN on the buggy sits in at least 1 full turn. Runs great and I have no problems so......

Either case it's got to be something stupid.