i was wondering what kind of weights i would want to use in my diffs. i'll be racing it at rcmadness in enfield, ct. the track has loose dirt, i don't know what tires i'll be running yet. since the weights are so out there i don't know what to start from. what would give the best hook up. i'm lookin for a loose rear end too so i imagine i'll run a thicker oil in the back but what for the center and front? thanks.