I might have won the last 4 championship's with my MR4-TC, but the cars going away from me now, i set it up two years ago and apart from changing the foams when they fall to bits i do nothing to it, its always perfect. the front diff recently broke so i cleaned it all out and put it back together, its now smoother than the rear which feels like the dial on a washing machine, the handling is different but I'm not quite sure how..i'd say it's lost its pointyness, but is also less predictable.
i've had so many bad cars in the past, and test other peoples, that i automatically drive around any problem. i guess i should buy two new diff rebuild kits, but the question is what effect do i get if the front is looser than the rear, and the reverse, or if they both go harder, or looser. what i need is a site of exactly doing what will have X effect. all i really concern my self with is springs and the amount of grip i use where, to control balance.