I have just today purchased a banshee and have never owned one. I have up untill now been a 4 stroke fan, but the price was right. the power supposed to be great. this bike will idle perfectly. but will not rev or even attempt. Just blaht blaht. i have drained the fuel to check for water. there are electronics going in the thumb throttle and the carbs. can someone give me a few good ideas. this bike was running then just shut down and has been sitting for like 5 months.