I have Futaba Digitals in my Sukhoid and on the left elevator and left ailoron I have a bad flutter or jiggle when I stop moving the control surface. I was wondering if I need to watch out for it. I know they are known to do this but wondering if there is a point where I need to try to fix it so it doesnt do it as bad. We have two nicad batteries in the plane and can only get 2-3 flights out of it. Now here is the funny part. We called futaba and they said we can not use lithium ion batteries with these futaba digitals. Or they at least said they reconmend not to. They said Nicad batteries would stop the jiggle but it really didnt. Please let me know what I can do.