i have a redcat hurricane that i have had in the closet for the last 3 years. I never used more than 2 tanks before i broke it and put it up. I dug it out and fixed it. i let it break in and everything but when it is going and it has room to open up it starts to cut out when it reaches the lower half of its top end and it never reaches fullthrottle. Any ideas of why it could be doing this?