Scored Main Cap Bearing - Ouch

So as a continuation of my bearing and contamination problem, I decided to pull the rocker assys and check the shafts. Sure enough there was some scoring, but it cleaned up easily with some 400/600. The rockers have never been touched so I cleaned them slightly. These are Racer Brown and Hughes roller tip rockers with Racer Brown hold downs. Couple of questions. .015" clearance between rockers means what? .030 total between hold downs or .015 total? I need some .015 shims if anyone has any. Oil in head valleys was nice and clean.
Thanks.