Well, I have the new head gasket in hand. And ONE of the idler bearings. I had ordered two at the same time from Amazon, but one came USPS today and the other is setting ~10 miles away at the UPS hub. Bother. Anyway, re-tapped the block, ran the bolts over the wire wheel in the drill press. The idlers are mounted on 10mm x 25mm bolts that I turned the heads on to fit through the holes in the arms with ~2mm flange on the backs. Same as I did on the Hunley. Mounting the idlers using nyloc nuts. The new belts are just looped on right now, until after I get the left head mounted and take the crank back to TDC on #1.
Although the other idler gets in Monday, I doubt there will be any progress next week. Doctor's appointments and jury duty will keep me occupied.