Link geometry is beyond perfect on this rig, that's one thing that's 200%!!
1-Pretty sure rear lower springs are too stiff
2-rides great but i believe shocks need more nitrogen, its smooth but too soft now that I've driven around through some off camber stuff, def too soft a rebound.
I dont know a lot about coilovers but I can tell rebounding is too soft..every little dip or if I just turn too sharp the suspension moves too easily.
A couple things to note here.
1) Coilovers are not tuned with nitrogen pressure. Pressure should be a set number (ex: Fox coilovers are charged to 200psi and all tuning is done through springs and valving)
2) Suspension moving easily is when turning (creating body roll) is a function of the roll axis height. A lower roll axis will cause more body roll. Body roll is then controlled by a sway bar.
3) Are you certain you have adequate triangulation? Without going back through all of thread and only looking at the recent pictures, it looks like a single triangulated 4 link front and rear. The minimum total triangulation is 40 degrees to keep the axle centered. If you have less than 40 degrees, the axle can move and it will cause some weird characteristics.
4) Ensure that the coilovers are not binding at the mounts, upper and lower, when flexed.
5) Where are your dual rate stops set? If at ride height the dual rate stop is very close to the slider, you're loosing your combined spring rate quickly. This is not necessarily a bad thing but if your rig is very light in the rear and you have stiff lower springs, you can verify the need for softer springs by moving the dual rate stops higher and then flexing again. If the rear flex is not improved while using the combined spring rate, you have something else hindering the rear from moving.
None of what I have listed above is a definite answer of any of the circumstances. This is just the thought process I go through when looking/reading the concerns you've expressed.
