firewall adjuster/adjustable quadrant or not?

Ok, my King Cobra clutch just blew up so I just finished putting a new Zoom (which by the way is AMAZING!!!). Anyway, I got it put in and put a new stock replacement cable with the threads on the bellhousing end for adjustment and it works great except for a little pedal rattle. (which I'm fixing today)I also ordered a new summit quadrant with the 2 hooks and a summit firewall adjuster.

My question is whether to put those summit peices in or not? My setup works great and I just don't see the purpose of the other adjustable peices...

As far as the quadrant goes, all I can figure is that it makes the pedal throw shorter and more in line with the brake pedal, but I'm weary of doing this because I've got the setup pretty close now and I don't want to have to jack up the car and readjust everything again.

And I see absolutely no purpose in the firewall adjuster because all I see it doing is moving the casing of the cable? Is this all it does or does it serve a purpose?

I'm pretty well versed in cars, but this has me stumped... Any help would be GREATLY appreciated

Ok thanks. Now as far as that vibration goes, I can't hear it anymore, but the pedal is still vibrating pretty bad. Ya know how it feels when you roll your tongue? That's how fast it's vibrating.
The new clutch fork I have is weighted so the only thing I can think of is that the weight makes it naturally push against the TOB. Any ideas?