The official renault way of setting the compensator was by using a gauge that screwed in where the bleed nipple ifts in the rear caliper and checking the cutoff pressure (according to the coupe manual). I doubt anybody has the tool these days!
The book states cutoff pressure 17bar +0 -4, with full tank of juice and 1 person in car when on the ground.
Too much bias to the back and it will lock up for fun, imagine braking hard before entering a corner & sideways due to locked rears? happened to me in the wet at 70ish not good, proper brown pants moment