Been there, seller swore the beam was solid too.

That line about ramp humidity versus vibration really hits home. We had a King Air that sat outside in Houston for two weeks and the Canon plug pins looked like they'd been in salt water, green fuzz everywhere, while the solder joints were fine. The planes that live in hangars barely show anything. So yeah, that ramp guy might be onto something. Moisture just sits in those connectors overnight and does its thing slow and steady.

Three weekends for one pallet table is wild, my wife would've doubled the bet by week two.