Make sure whoever you buy from includes the keys, mounting brackets, hardware, and preferably the torque limiting wrench. Ask for pics of everything. There’s a lot of easily overlooked pieces of buying used OEM crossbars. Honestly it’s not really worth it. I’ve bought items from people on here...
There’s not really much of a discussion to be had. You’ve found something in the tech that you don’t like. Unless you’re looking for advice on how to hack the tech or looking for other people who feel like you do and want to complain together, you should voice your concern to Tesla customer...