How loose is loose

[NitroArgi]

Hello all,

Just got a ZX5 FS2 and a RB5 SP2 for the upcoming racing season and I would like to ask you guys how loose the diffs should be...

I was an AE racer for some time now and boy the Kyosho diffs are day and night as far as setup goes. I did some testing with the K cars and I figured they both like loose diffs

But how loose is loose? I went in ZX5 with front 45 min loose from fully in and in the rear one full turn out from fully tight, but is this right???

I also have a LOT of white diff silicone turning black at the end of the day...any ideas?

Other than that both cars are just amazing and a lot easier to drive than the AE just have to figure them out..

Regards
Argi