Mission 700 series baffle vibration

I have a pair of Mission 701s where the plastic front baffle vibrates against the wooden cabinet because the glue has failed. Apparently this is a common problem but I cannot find a good fix.

Any ideas?

If nobody can think of a better plan I'm going to try using an excessive amount of PVA over 4 days.

(1) Remove the woofer.
(2) Run a healthy bead of PVA along a long side of the baffle on the inside.
(3) Leave the cabinet face down (at a slight angle) to dry overnight.
(4) Repeat the procedure on the other 3 sides.

Will that work?