Hi, I decided I wanted to remove the factory sub in the enclosure in the back. I have taken the panels off, unscrewed the 8 or soe screws holding the sub in from the outside, but it will not pop out. There has to be something I am missing, I hate using a lot of strength to force it out before knowing if it just needs this to come out. I can spin it around inside the hole, so there are no more screws holding it together, it just won't pop out. Anyone done this and if you have did you have to use a lot of force to get it out? Thanks!