Hi all I am back working my tr3 and was wondering if anybody knows if it is possible to undo brazing. I took a radiator into our local shop to have it record and the owner said the neck on the top was repaired by brazing, and he was right, clearly it was. Anyway he was real adamant about not using it. However, it is the original radiator, so I tried to grind of the brass and have had some success. But, sometimes my stubbornness is not a virtue. Suggestions are appreciated.