New brake pivot bolt found on eBay, was perfect replacement for the shortened one on the front calipers. It was billed as a Dia Compe, but it may have been Suntour all along.
Exact same style right down to the JAPAN stamp. It was too long, set up for a “nutted” mount style, and needed more thread but was easily brought up to spec in about thirty minutes. Brakes cleaned up with a simple rag wipe and reassembled with fresh grease.
I ordered a set of Campy style Soma hoods, since locating Suntour hoods seemed impossible. They fit perfectly, nice and snug, and look great. The levers really almost look like new now.
Waiting on some headset parts that were supposed to arrive today, but didn’t. Maybe the mail carrier will stop by later, since the tracking info said they were out for delivery.