i say throw out all those stats and drive. i have different gearing in mine too, i took out the spider diff (52t) cause it fell apart when i was trying to fill it. i have a standard 46t hyper7/8 diff with a 12 tooth bell, then 11/43 internal ratio (the 10t hellfire bevel works too if necessary). with that tooth spur the math sais i should run an 11.5 tooth bell but that aint happenin' so 12 it is. 13 on the more open/less technial tracks. thats with a jp4, gen2 30% and dynamite max-life shoes (3 gallons) and 1.1 mugen springs. also 5/10/1 is a great technical setup.