Rotors, calipers, and hoses on the rear were replaced about 30,000 miles ago, however that was seven years ago.

I got fed up with the thing and went to the gym. Between sets I think I figured out what the problem is. During the bearing replacement, I used the rotor as a slide hammer figuring that if I damage it in the process it should be readily apparent, and new ones are $22 at NAPA. I think what happened is I bowed out the rotor enough that it is now pushing the inside piston to max compression with a little force left on it. I'll replace the rotor and see if that fixes the problem.

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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 401,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 26,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.
99 Mazda Miata 183,xxx miles.