I'm not a big fan of recoring an old radiator. Yeah, maybe when they were 20-30 years old but now that they're all reaching the 60 year mark the tanks have had 60 years of expanding and contracting. I've had a few bad radiator and they all had cracks in the tanks. For the cost of recoring you should have been able to find a new radiator for a few bucks more. The last time I checked into a recore job, maybe 4-5 years ago, I think the recore was $350+, a new radiator from Radiator.com was $400. Radiator.com is a clearing house that puts you in touch with a local radiator shop. I know when I called I was connected with a company in the next town over.