Just installed my BSD coffin mod tonight after it sat in my basement for 6 months. Did not go smoothly at all. Had to remove a ton of material from the underside of the mod, and it still doesn't completely sit flush. Ended up breaking the corners on the back end of the mod, but eventually got it seated after a hour of dremeling. Not exactly the mod I was hoping for. I must have gotten a dud. Still looks good, but damn it was a lot of work.