Very interesting; Long, who was the manufacturer of your headlamp (it should be on there somewhere)
Jason and I both attempted this when the E90 came out, with no success (and I have done preludes, nissans, etc) Jason actually melted a light, I got mine to the point where the plastic was beginning to distort. I cut out some adhesive and heated the hell out of it, and it was not heat sensitive whatsoever.
I wonder if a different adhesive is being used now.
Did you install projectors into your prelude lights?