Your needles are backwards if its blowing smoke but running to lean. You need to set your needles to factory settings, which inside your box in the instructions it will tell you what they are, if you don't know on Nova engines its about flush with the top brass collate on the HSN and about 4 turns out from bottom on the BSN. Also you say you have heat in the engine and its still getting stuck. How much heat? what temp? If you are new to breaking in an engine then you need to be using a temp gun or have someone that knows what they are doing to help you. You need this engine to be as hot as about 240 during break in. Look up Adam Drake on YouTube for videos on engine break in, he uses or suggest the easiest way to break in an engine till you get more comfortable with doing it. There are many ways to do it, he suggests the easiest way to break in an engine for someone new to the hobby. Also get you some new fuel line. Dubro makes some decent line and cheap and tough. Doesn't have the best mileage but will get you going. Pressure lines is no less than 6 inches, and fuel should be that or a little bit more.