I was able to pull a lid off one of the MB unit. The applied gasket is sticky. I actually have to use a small flat head screw driver and a hammer to slightly tap through the lid holes to jar loose. I do not tap on the fiberglass.
So as I figured...the center pole doesn't come out. Just leave it there.
I have a few of the MB modules that are bugging me because it appears the woofer isn't mounted exactly straight. Probably not enough to matter.....
The one here I had to loosen the woofer inside to slightly to straighten....and it still wasn't right. I therefore removed the woofer, filed the holes in the fiberglass a little to allow the woofer to mount more center line. Looks way better but could be more perfect. There is a couple that will have to be addressed. All this stuff is in great condition for being 30 years old.
I applied a new gasket/foam. The gasket on the woofer looks like new as well as the woofer/driver.