To begin with I suggest using these tire sizes, 810's on R/S of kart, 600 on L/R,500 on L/F. depending on the track you run as to what compound or brand.

Also suggest you square the right side up and set the toe at 1/16 to 1/8" toe OUT.Square the R/S and set the L/F at either number for toe OUT.

I suggest setting castor at 8* on LF and 11* on RF if track has sweeping turns.If tight turns I suggest 9* on LF and 13 on RF.as far as stagger goes this depends on the track condition and the tires you are running,But I always start out with a base line of 1/2" to 3/4" on the rear and 1.25" to 1.5" on the front.

NOW, onto percentage numbers. Again I would like to remind you that there are NO "magical" numbers but these are numbers that will get you started and your Predator chassis running.

Nose weight 43 to 44.5%,  Left Side weight 52 to 55%,  Cross weight 56 to59%.

Please remember that moving the seat forward, rearward, left or right will effect all these numbers and will also effect weight placement on each wheel.The percentages given here are given as a starting point and PLEASE keep in mind that each individual driver and track may require different percantages based on preferences for best results.

Also I recommend running rear bumper "tight" and starting with a rear tracking width of 39 1/4" with the RR being 1/4 off frame rail