Radiator leak at top seam

If it's just a pinhole leak i'd clean the area good and use JB weld
Yeah, think I will try it. Cleaned it up good as I thought about putting a line of solder on there but didn't want to take a chance weakening any other areas of the seem. No good way to keep the ends cool without pulling the radiator out. We will see if the JB holds for a while.......