Rather than re-engineering your brake system. I would simply order a caliper overhaul kit (PI Motorsports stocks them at reasonable prices, as do all the Pantera vendors). A 'kit' does both front or rear calipers and takes a Saturday to redo all the brakes. Varnish and trash builds up inside the calipers and can cause freezing of the pistons or lack of piston return. Just don't waste time trying to find a kit at Pep Boys for a few bucks cheaper. Brake failure on the road is extremely serious! It's a messy but not difficult job IMHO.
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