To actually ANSWER your question, see the two posts above mine you will understand my intro.
You must retard, or turn down, the timing. More timing reduces initial torque in order to gain top end. However, too much timing can cause problems you are describing. Also, the Fuze system is sensor less, and as a result, may hesitate slightly when accelerating from a dead stop. Also, contact Horizon Hobby as far as gearing recommendations. Hope this helps.
How would I describe my holeshots?
Ready... Steady... Confetti!!!! (gonna need a new one of those)