Kudos
And here is hats off to a guy who is just carting the speakers across town
What do you line the boxes with?
Well, Kalamazoo - Detroit.
I believe I thought of everything for any time they have to be stored or moved, which for me is more often than not.
I bought a sheet of 1.5" foam but only used a smidgen of it. Created wedges at 8 degrees to grab the outer edges. Made a dummy upper cabinet to check the fits.

Making sure the wedge clears the tweeter.

8 degrees
