I was with Mark when he wrapped a pin of mine for transport....Lots of work went in but made it safely...

I would agree, legs off, if it has a gun handle or similar I would get it removed too.  Balls out (throw em away before shipping), cardboard down on glass/rails to stop dints from headbox...Lots of bubblewrap and cardboard...Mine got transported on its bum (ie where the powercoard goes in) so the coin door is facing roof.