TT-02B後避震

想問問原裝後避震條彈弓是否過軟？
車子的底盤很易着地……

另外油壓油有分度數的嗎？
如有buggy應該用多少度油？

That seems to be an issue with entry level Tamiya bugger such as DF02/DF03...

A quick fix is to put some rubber 'stopper' such as 'o-ring's at the rear dampers and that should reduce the impact when bottom...
But if fixes like this shall results the rear-end damper/spring mount take all the impact and may break...