Took it to the LBS. The two oldest mechanics there looked over the frame. Downtube seems original due to the workmanship in the BB. Probably SL to give the frame a softer ride. The cracks are cosmetic issues and suggested I only touchup. After reminiscing about the Italian frames that he used to get from 10 Speed Drive Imports he then referred me to a good machine shop knurl the crown race.

I feel better today.