I have a Yakima ski rack on my Liberty that this season, one of the locks acts very weird. Here's the ski rack: https://www.prolineracks.com/yakima-3070-buttondown-aero-ski-rack.html One of the locks get stuck in the locked position. It'll lock smoothly and when you go to unlock it, it's stuck and you could break the key off in it if you wanted, it's that stuck. Then it'll just move like nothing is wrong. Tonight it got stuck and I gave it a few taps with a hammer and the key turned like normal, if that helps anyone diagnose it. The first few times it happened I thought it was just frozen, but that's not an issue at all. Any ideas? I'm thinking of going to a lock smith but wanted to see if it's an easy fix or if I should just replace the locks.