Today:
Added about a 1/2 quart of oil after my 130 mile or so cruise yesterday.
Snugged the thermostat housing bolts and the tower clamp bolt on the radiator hose.
Thought I saw a bit of antifreeze, but the intake is dirty and oily, so who knows .
Snugged the carb mounting bolts - probably needed, can't hurt.
My idea from last night :
Lubed the speedo cable by disconnecting the upper from the cruise module under the hood, then disconnecting the cable from the speedo under the dash w/o pulling the cluster.
Sprayed WD40 down the cable housing, then pulling the cable out and oiling it down.
Cable back in housing , fight it back up to plug into speedo, hook up end under hood, and test drive.
Speedo still moves - success!