The base settings are needles flush, that's where I started for breakin, very fat lots of smoke and I run 25% nitro. I leaned the bottom a bit to keep it from flaming as the pinch is ridiculous. I worked the HSN only and after 12 tanks I'm about 2mm below flush and still have good smoke and speed not race tune yet. Motor has a very smooth power curve and with a 2060 pipe not very loud. I'm gonna run this at the Pro Series next week and keep you guys posted, so far I'm very impressed with the mill. BTW the carb is very accurate and consistant.