
I run my wing in the lowest position which is pretty flush with the tower cut out. I countersink the bottom two holes and run flat head screws.
The inline servo free's up a bit of chassis room, but the main reason is to keep more weight over the front of the car to better distribute the weight front to back.
The reason I asked if you noticed it jacking a rear inside tire in a turn is that in testing it was apparant that off power the car transfered too much weight on the outside front causing the inside rear to lift off the ground with stock arms. Moving the shock in on the rear arm allowed a better balance of weight transfer keeping more more weight back. Niki's ROAR 250mm width front arms have an added third shock hole (one more out from stock) for added tunability.
The car was dynamite on med grip dirt with 2mm carbon chassis, I think being slightly narrower then the modern buggies ultimately gave it more grip overall. I'm keen to hear what set up you end up with.