With the pivot ball setup, thankfully there are a ton of F103 F1 racers at my track, so was able to get some clues on setting it up.
What I did was put two small screw in the front most pivot, either side (left/right, not front/back) to restrict the amount of "flop" on the pivot setup. Then using a tweak station adjusted the screws down so it car is perfectly levelled. I have put the carbon fibre top deck on my car, gives you full access to the front pivot.
If you want, I can take some pictures of the droop screw setup when I get home tonight from work.
I'm still working out setup for it, as it can be hairy getting power down. I noticed that some drivers of this car said there is a missing part from the diff, what is that? Does it help with controlling the power to the rear wheels, as my car is very snap oversteer happy unless you are really delicate with the throttle, and I am sure you can be more vicious with it, maybe not to the amount you can do with AWD chassis, but a little more.