I have a 530 that has developed some side-to-side blade play. A little research tells me that it's not uncommon for this model to wiggle a bit due to the slim profile, but the movement is more than I would expect and quite annoying. I played with the screw tension with no luck, and I seriously don't want to disassemble an unfamiliar lock with a spring in it. It would be great if there was a quick fix I am missing, or is it time to pack it up and mail it back to Benchmade? It's an otherwise great knife that I would like to carry again if I can get it firmed up.