Taken me a while to respond, I've been out all day and wanted to add a little detail so I wanted a keyboard, not a phone.
It does give the big 'click', you can definitely hear it and feel it when I shift the energy to the rear. The problem comes more when I use it that say I want to use the tilt cylinder (side to side motion) and it will also jiggle the rollback. It's a harsh jerk only a couple inches and then really loads the tractor. At first I didn't believe the tilt cylinder was working correctly, as both the tilt and rollback would harshly jerk and load the tractor. When I added the 1200 pounds of the box blade the tilt started working, but when it got to the end of the cylinder, it would still load the tractor and jerk the rollback. Again, it's not like the rollback and the tilt cylinder just work simultaneously together with full motion. I've also noticed that it's more the roll back, not so much the lift, and the one time I had the grapple on (first time I had the BB on) I remember it to be jumping a lot. This still wouldn't explain why the top (worked all the time, every time) and the tilt (worked so-so, better with box blade on) work, but not the box blade cylinder.
Just to try I looped the hose on the middle and bottom set of remotes. The middle would load the tractor if I pushed it to fast and would jerk the FEL. The bottom, on the other hand, would load the tractor only in one direction and didn't jerk the fel as bad, seemed more subtle. I was in a hurry and not 100% sure on this, though. Since the others were so much more blatant I just assumed it was normal and wasn't paying much attention.
To answer some of the questions/statements:
It would be awesome if it was just a loose wire. I can only imagine the price of a whole, new diverter. A wire would be great. Even debris would (I think) easily taken out and a lot cheaper.
I did hook the rippers up to where I had the TL cylinder. It worked fine in that position. The bottom remote has seemed to worked well, the top two remotes are what have been giving more trouble. The bottom has always been able to fully extract and retract the cylinders.
I wasn't specific enough, sorry. The raise and curl isn't affected when hitting the 3rd function, but when I am trying to move the tilt in the rear, it will jerk the curl, but NOT vice versa. It would also work if I had something hooked to the 3rd function in the rear (box blade) and tried to move the rippers and had something in the front (grapple) it would jerk the grapple. It jerks whatever has the same function.
The FEL auxiliary ports are no leak disconnects and different from those in the rear. With that said, they are a HUGE PITA and I'm thinking about rigging something up so they are normal 3/4" QC. They don't let any fluid out, but you have to be hulk hogan to get them pushed in. I was thinking just getting the QC for each end and then putting a female end on it and taking the no leak off the grapple and putting male 3/4" QC on the grapple. Still not sure about doing it yet, though.