Kevin's method is it. I put the CRT in the same position, added 2-3 inches of bubble all around with bearing at the funnel, not close to the neck in any way.
A within a custom-constructed a wooden box glued and screwed!
before closing pack.jpg
I just sent a Zenith SS flat chassis and modules wrapped in a ton of bubble wrap and foam panels completely around the slightly oversized box.
It was delivered one state away by FedEx TOTALLY destroyed after being in their custody. Said member described damage consistent with a 9 ton truck running over it.
Shipping: $26
Value to VK member BEFORE shipped: Key to a Chroma-color Avanti restoration
Value to VK member AS delivered: