Just this weekend I decided to try out a new set of driver tubes i - and while pulling the old one out I slipped, somehow lost my balance while crouched over the rack, stumbled, and cracked a 1990s Western Electric 300B. Literally the most expensive pair of tubes I own.
Thank you all for sharing your mishaps - makes me feel a little better knowing I am not alone in this.
@audiodwebe I hope you can find a way to salvage your table with a new arm & cart! So sorry this happened to you.