I made a small notch under the motor mount to route the esc-rx wire. Hard to see but anyway...
When using an aftermarket ackermann link, with an extreme setup it becomes really easy to pop out the inner ball stud. I tried to do a captured design with Kyosho parts, it seems to work
Setup-wise, I started with the Asarashi astro setup but I moved to more FS-like setups, with a higher roll center and more antisquat on the rear. I also started with a 7.5 motor, I will try a 6.5.
As for the pistons, 4x1.3 have too much damping. I fitted 3x1.5 on front (40WT) and 3x1.6 on rear (35WT) (or was it 3x1.6 and 3x1.7? Will check that), AE tapered pistons, on the bench it feels really good.