I test the Medius today... Immediate thing, the balance has changed: More front, less rear (no kidding). I have the slight impression that there is a better traction but it is hard to tell... By the way the flex is outrageous! What the frak! There are a lot of hole in the center line of the chassis and I'm pretty sure I will need to add stands between the upper and the lower deck to mitigate that. In the front, please note that the holes are not aligned with the original servo support. It seems that we can use another servo support instead (original still working as it is not fixed to chassis itself)...

Love the feeling but there is a marge of improvement... Not even talking about electronics installation!