Trying to sell my Fender EC Twinolux on Reverb.com - my first online sale of a piece of gear. They have a helpful video on packing up an amp... They suggest removing the tubes and storing them separately in bubble wrap, but I don't know. I'm nervous I'll break them or screw up the amp if I try to remove them. Or the buyer will screw it up putting them back in. Can I ship without doing that? Also any thoughts on the best shipper? UPS?