I found out that if you can get away with not using the dremel to remove the tabs, it will be a lot less mess. The first housing I did took quite awhile to do, while the second one was only a couple of minutes(15 or so). On the second housing, I managed to use a small screwdriver to break the tabs off instead of dremeling. It worked a heck of alot easier. Just make sure to take your time and get your marks lined up with your tabs before you drill.