Well, I haven't had this much fun in a long time

Yeah, this is not going to work Mikael. The Bondo was not the issue.
I used a piece of a pillar pod that I had lying around. Powder will start to flow out at 180*F and needs to reach a temp of at least 325* to start adhering to the part (cure)
The pod was starting to "melt" at a temp of 280*
Sorry, I tried.
I think your best bet is to buy this one that Chris told you about
http://www.gaugepods.com/mitsubishi.htmlor keep working on yours to fine tune it.