Tricks for stuck TV cable release button?

I'm helping with a 47re truck that's never had the TV cable adjusted and I can't get the adjustment button (by the pump) pressed in for the life of me. My old standby method (a pry bar against the fender well forcing a flathead screwdriver up into the button) isn't doing the trick this time and I'm afraid I'm going to break the button.

Any of you pros have a trick for getting one freed up?





Sent from my iPad