yea, that definitly sounds like a bettery problem. The compression is because of the stock settings being so INSANELY rich it just gets hydro locked like instantly.... just be careful with it , if its really tough to pull, don't pull it more then 1 or 2 times... mine would ALWAYS start on pull 2. If it doesn't, just do the de-flooding procedure.

mine was actually so rich that it wouldn't even move if I hit the gas from an idle... after about 2 tanks of idling it finally would start to go if I started it out 1st by the throttle trim. It, woul just drown the engine in nitro....