Harsh ride!

[sketchy]

Really appreciate the broad range of input guys, very helpful thank you.

Nothing is fouling the travel of the suspension, i.e. bumpstops and the amount of bump travel should be above 30mm.
I have not heard any spring binding.

I have moved my car into a nice dry garage with the intention of raising the rear suspension to a stock height to see if that affects the wheel hop. I'll also check that:

The four links don't bind in their mounts.
The springs don't show any signs of binding.
Measure how much bump travel i have and set that accordingly when/if i lower it again after.

In terms of the four links and traction, i found this article from hachiroku.net very helpful. So may look into a set.

http://www.hachiroku.net/5link