this might be jacking this thread but i have a similar question. I am running a jammin x-1 truggy. Our indoor track is kinda tight and has TONS of traction. my current diff setup is 7-10-3. the thing acts like i need a baseball field to turn it, but when i ran outdoor earlier this fall I had no problem. i personally like the back end a little loose. SO, should i maybe go up to 5000wt in my rear?? thanks