[neallewis]

Originally Posted by toooldskool

Done all that but what about waterfall

I didn't mention it as I don't think changing it will directly affect or increase your rear traction on sandy astro.

Cutting the waterfall is to give more flex in the car in that area, which makes it easier to drive in high grip conditions. Allowing the chassis to flex will take the edginess off when the traction is high, which in turn makes it less likely to grip roll when being pushed hard.