Radiator leak at top seam

Hey all early Merry Christmas to ya.
I have a small pinhole leak on the top of the seam at the top of the radiator on my '69 Barracuda, before I go through the hassle of pulling it/replacing it i wanted to see if there are any recommendations to try for a fix.
I know welding/soldering has its own issues as in heating up current seam can cause failure at welds/solder in the seam.
Any suggestions?