I'm sure it was the wood I was using and that there was some alcohol left in the wood, also the aluminum's direct contact with the heating coil of the hot plate was probably a factor. I've had nothing but luck with other woods (hickory mesquite, apple, etc...). I'm thinking that instead of using another metal as a smoke tray, I'm thinking about going the terra cotta route again. I'll use a base for a flower pot ( the thing that catches the water overflow). Maybe that'll fix my problem.
It's ok about the hijack, I have to admit, I've hijacked a few threads before too.