Well don't I feel like an
idiot! I took your advise (DCM/Jimmy) and took a second look at the Durga build manual. It looks like I incorrectly installed the rear arms to there shortest wheelbase position rather than then the longest. This explains the lack of dampening in the rear. The arms in the shortest position where hitting the backside of the chassis halfway through there compression. I also added the Tamiya touring car pistons F2/R3 using the 40/35wt oil -
100 times better. Thanks for all your help. SO