Hood Bumper Adjustment

[DKSpringer]

Hey all, silly question here. Can anyone tell me how to loosen the hood bumper stops on the core support of the 73-80 trucks? There are two interlocking metal tabs that kind of fold into each other. Before I bend and break something, I thought I would ask for help.

Do I have to bend open the tabs where they lock together, or do I just grab the top one with a channel lock and loosen it like a jam nut? Smile at it and ask it politely to let go?

Thanks!