hi i bought a new case, and it's great, but...i can't figure out where the dvd drive will go, on the bottom front, there are cages for 3.25 inch drives. The top front has 3 mesh plated, and behind them it seems you could mount a dvd drive, and the plates look like they are going to pop out when you push them. so are the plates bad manufacturing, or do i pop them out for a dvd drive?