I have a 292 with Sissell'as installed Lump Ports and no problems. If you can find the correct adhesive that with stands both heat and vibration I would think the glue idea would work fine. But I'd sure suggest you try the adhesive using the same metals as a test bed first. The heat from a torch should give you the temperatures you would look for and the vibrations can come from air driven jitter bug sander.
Normbc9
