Dash Removal -- 1993 LeSabre

1993 Buick LeSabre -- I'm trying to pull the stock radio and put in my CD
player and I can't seem to get the dash cover off. I took out all the torx
screws I can find: a couple above the steering wheel, and maybe around ten
along the bottom of the dash which were covered by the fake-wood trim
panels. I don't see any on the ends of the dash. The whole thing feels
loose except for at the top there are a few spots near the vents and at the
ends which just won't budge. I've pried hard enough to come close to
breaking it, so I don't think its just clips, but I can't see what's back
there. I've done this in many cars (including my old 1987 LeSabre) and
never had any problems before. Is there some hidden screws somewhere that
I'm missing or what? Any help appreciated.

Thanks