Gotcha. I've only recently started using JB weld SteelStik and the similar QuikSteel product. They are both 2-part epoxy putty. I used some to even a defect in the top edge of my carburetor's float bowl and also used it to fix some of the other issues on this box (holes from fresh air door being ripped off, broken clip edges). You can see the other heater box repairs in my main project thread. I've been really impressed with it so far. The putty gives plenty of time to mold it into place while maintaining enough structure to support itself.
