Off topic--anybody use Devcon products

[swedishsteel]

I know usage of Devcon products have been discussed in the past, so here goes. I have a radiator that has leakage where a tube enters the tank--repair shop says new recore $$$$$$$. It is brass. I'm wondering if anyone has tried using Devcon plastic steel for something like this. The area is somewhat accessible with small brushes so can get it reasonably clean. Thanks for any input.