Here's another weird one
First the roof vent that kept opening itself while towing, now this.
Coming back across South Dakota, our outside shower door started coming open and then, of course, the hose and showerhead. We'd have to emergency stop on the freeway. I'd stuff it all back in and make darn sure it was locked well and right. 5 minutes later, same thing; and then a third time. Here's what I think I've diagnosed. Strong crosswind from the right front quarter created a "vacume" of sorts on the left side; causing the showerdoor to bulge outward enough to disengage the tab from the lock. There is that much flex in the showerdoor. (Yeah, I could easily engage and disengage the door by hand while locked). Had to duct tape the darn thing closed to get home.
2012 F150 FX4 Ecoboost, 2016 Surveyor 274BHS
2003 Yamaha FJR1300, Demco Premiere Slider
1969 John Deere 1020, 1940 Ford 9N, 1948 Ford 8N
Jonsered 535, Can of WD-40, Duct Tape
Red Green coffee mugs