Ernie: A couple of things we need to know before we can help:
1. Is it an oval or is it a road course? If it's a road course is it tight and slower or is it more open and faster?
2. What is the temp of the the air and track?
3. Are you running during the day or night?
4. What type of batteries and motor are you running, and describe what your driving style is like.
Let us know, thanks.