Heater box grill removal

["Jane & Arden Bedell" <bedel003@tc.umn.edu>]

I like the #4-40 panhead screw idea, but thanks everybody for *all* the
great suggestions.

Here's another one: how do the heater box grills come out (the ones at the
base of the windshield just behind the trailing edge of the hood)?  They
appear to be stamped from some petty flimsy sheet steel so prying is
contrindicated until I'm sure.

--Arden