soft loc or advanced launch question

[Joe Sprint Bros]

L79, I think you would going in the right direction to leave higher and less air (9.5-10.5 lbs). I would also pull over to side at end of track(return road) and measure each tire immediately.If they are different psi (assuming same at starting line) then you need to look at chassis preload, tire circumference,etc. Are you using the Alum wheel and 900 series disc? Joe.