battery holder question

thanks for the reply and ill take a look at just screwing it into the chassis, from the top. It seems the easiest way. when i ws looking through the forums I could sorta see some ppls pics of how they did theirs, which is how you described from the top down, just wasnt sure what they screwed it into. I was contemplating trying from the bottom up and having another piece inside the battery holder, and covering it up with foam, but wasnt sure if that would be the best idea.