Ouch!!! Sorry about your amp being brutalized by incompetent handling. I used to run a shipping department as my day gig for a very large retail concern for a number of years, and it was amazing that sometimes some shipping companies could still find a way to damage items that were more than over packed beyond perfection. I'm talking about stuff that was packed to be darn near bomb proof! Anyways I hope Fed Ex pays up for your obvious claim against them, and I know how that process can be another ordeal in and of itself. Sadly in the end they damaged a fine vintage amp, and can you be made truly whole in this situation? I wish you the best and I hope you can get things put as right as humanly possible.

