73 Duster upper plastic door panel

Well I thought it wasn't so hard to do until I tried it. There are slots in the plastic that receive tits on the whisker that have to be pried up to remove the whisker. It's a case of it snaps in place easily, almost like the **** on new cars, easy to snap on and a mother to get apart, but may need something special to remove it. Mine are in good shape so need to remove them.