[carlin]

Hi Mate,

Kit piston's usually run from 50wt to 25wt front & rear.

I'm currently running 50/45wt front & 40/35wt rear indoor low grip like Worksop.

As for springs i would get all if you can, but wont go wrong with Yellow front, rear's Yellow, Red, gold & white thats all i have used out of the selection so far just for indoors.
As for outdoors you may change totally so softer front springs maybe?

Sorry if not much help.

As for servo, you cant adjust your slipper very well & i find that you dont get the best out of your steering. Also doesnt help the life of your servo i think anyways.