And, PAY ATTENTION to the TRANSFORMER HOLD DOWN BOLTS!!
If you cannot remove the power transformer easily and ship it in a separate box, at least take a minute and inspect all xformer hold-down bolting, lockwashers, etc. and tighten securely, replacing any suspect hardware accordingly. Loosening each bolt and adding a drop of Loctite before retightening can make quick work of it.
While you are in there, tighten up the hold down bolts on everything else that might come loose in the vibrations of shipping. Air cargo is subjected to harmonic mechanical waves that can actually back nuts completely off of threads, even if the component doesn't break completely free, the nuts and washers can lodge in places where electrons shouldn't flow.
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