Replacing magnepan binding post


Somehow the post into which you insert the speaker wire broke off. Mag sent replacements but for the life of me I can’t figure out how to remove the back plate to get access. Would anyone know how to do this? 
novatt
I’ve owned their SMGa, MMG, MG12/qr, 1.7i models (all great for home theater) and thought I’d seen everything else Magnepan manufactured, over the past forty-some years.    All had small, round head, Phillips wood screws; holding the terminal plate in place.     What model are your Maggies?
I’ve seen Magnepan’s MG 3.6 / 3.6/R (with screws holding the terminal plate), but- have never seen, or heard of, a model 3.6a.    Can’t help you there!     Have the socks (perhaps) been replaced and the terminal plate, partially covered?        Speakers/crossovers, modified?
If the terminal plate is the original: there should be screws in the terminal plate's four corners.       If not: color me baffled!       Sorry I couldn't be of more help.
Thanks. It’s all original but there aren’t screws anywhere that I can see. Thanks for trying! I’ll try to get thru to magnepan which isn’t easy