IF you add the spacer you'll probably have to put a softer spring on as it preloads the existing spring so youll end up with a hard setup on the front
Dont overtighten the wheel nuts as the 850s wont like it. Its way more stable with the F103 rear wheels
My next tuning option is to try the TRG rubbers as thats what everyone uses in our club, apparently theyre the tyres to use, I can keep up with an F103 running TRGs with Zen 25s on my F104
Dont give up on this car boys, keep up the good work.Sooner or later we'll run rings around the F103 and F109