Thanks for the replies guys. After a few recommendations for JB Weld, I decided to give it a try. I used a Dremel to remove the powder coat from the stand, then roughed up the back of the bracket. I put enough Weld on both surfaces so that a small mushroom formed in each of the bracket screw holes. So long as the Weld adheres to the aluminum well, the mushroom heads should be enough to keep the bracket from coming off.............but we shall see!

Thanks for the suggestions. I'll let you know how it holds up.

Fritz