rebuilt 4kq rear calipers sticky/seizing - recomendations?

[William Perron]

Well, the rebuilt rear calipers I got from Foreign
Autopart have developed a sticky rear e-brake again
after a little under 2 years.  Tried cleaining up and
lubing the mechanism, but one still sticks.  Easily
pops free w/ a light hammer tap.  Can anyone recommend
a good source of rebuilt rear calipers that might last
a little longer?  Or is this about all I can expect
from rebuilds?

-Bill Perron
'95.5 S6 Avant (sticky right cable - calipers OK)
'85 4kq (sticky right caliper - cables OK)

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