I cant get my dash out 92 Jetta

If someone could please let me know how to get the dash out of my jetta that would be great. I need to replace my heater core. I have everything out (instrument panel, head unit, gauge cluster, glove box) and the dash still wont come out. It feels like there are two spots near the windshield that are holding it on, but i cant see anything. HELP PLEASE!

Under the cowl (plastic cover above firewall under hood) on the left and right sides are 10mm nuts that hold the dash. One is hard to get to because of the wiper motor and computer. The other is near the Fresh air intake and is easy to reach.