Nate,

Mapleleaf's comment on reversed calipers reminded me that rebuilders some times get the Left and Right halves of a single caliper paired up INCORRECTLY.

Check the TOP of each front caliper, right near the mating joint between the two halves. The surface should be free of any punch marks.

Then look up at the BOTTOM of each one. You should see a good-sized "dimple" on each half, near the joint line (within 1/2" or so).

If you DO see a dimple on the top of either half (or don't see the "match marks" on the bottom of each half), that caliper has an unbleedable lower, outside passage, which may contain trapped air.
--
Bruce Young,
'93 940-NA (current), '80 GLE V8 (Sold), '86 240dl, '85 244 ti, '83 245t
'76 244 (R.I.P at 255k), 73 142 (98K), '71 144 (ex circle track car)
Used '70 144 from '78 to '92, New 144 from '67 to '78, Used '62 122 from '63 to '67