I am trying to install a H/U into a '97 GXE and I cannot get the top part of the top two vents (the ones that are above the center console, connected to the whole unit) to pop 'out' of their slot. The bottom part of them are coming out but the top refuses to. It is stuck in the center at the top. Furthermore, by tugging onthe vents,the from on top of the vents has disengaged from the vents behind them and they won't snap back on.

Any help is appreciated, thanks!