Serpent Driver Ryan Johnson developed an alternative set-up for the Cobra Buggy, which for him, worked very well.
Below the specifics, feel free to try !
His full set-up is here:
Front spring was Serpent RED# 600353
Shock pistons conical 6 hole (4) (#600349)
Front piston conical 6 hole drilled as described
6 x 1.4mm
Rear piston conical 6 hole drilled
3holes x 1.2 and 3holes x 1.35
Piston mounted upside down conical side up.
Used 1st version wing, which is better for high speed turn: Wing white nylon (#600143)
Used Truggy front caster blocks 12 deg
C-Hub truggy 12 L+R (#600373)
and Truggy rear uprights. Upright truggy L+R (#600418)