Re: Ibanez Jen BFP tremolo instability?
2 things to look at.
#1-the proper "level" is with the bottom of the bridge baseplate parallel with the body(which might be tough to see if it sits well below the surface).
#2-take a really close look at the nut and make sure its tight against the end of the fingerboard. If you any gap there, that would explain things being messed up.
I've done hundreds of setups on Floyd Rose and Ibanez bridges and I find certain things really help.
#1-I cut several blocks of wood that fit under the back of the bridge, and cut them at several thicknesses(from 3mm up to 10mm). I drop one in the cavity under the back of the bridge and swap them out until I find the one that will block the bridge at the proper tilt(bottom of the plate parallel with the top of the body), and this must also be with the overall height(action) you want.
#2-I tighten the claw so the springs pull the bridge hard against the stop block(step #1), tune the guitar to pitch(do not lock the nut yet).
#3-adjust the intonation
#4-lock the nut and adjust the fine tuners so the guitar is in tune(against the stop block)
#5-push the bar down and remove the stop block(the guitar will go sharp).
#6-back off the claw screws(evenly) until the guitar is back to pitch(in tune).
If you've done all this, the bridge should be good to go. If it doesn't return to pitch, look for possible friction points(the stud and knife edge, springs against wood in the cavity, the trem rubbing anywhere). Hope you get it sorted as that can be really frustrating.