Well that has not been my experience in high speed running but then again I only run 1/10 scale cars.
What is your name?
Where are you located?
Are you signed up for the USR Fontana?
I have fresh packs matching your description you are welcome to run, and even if you prefer a certain brand (I have good connections) and I am sure I can get you all the power you need for the weekend.
Let me know I will try to do whatever I can to get you the best chance at setting a record.