In talking with the CRK Shop Foreman at Blade this year, I asked him what types of repairs are being done on knives in service, and he said that Sebenzas do come through the door needing remedy of lockbar wear. We're talking about two surfaces, though both hardened, that are making frequent and semi-forceful contact here. They're going to wear, though in my experience very, very minimally. The lockbar on the Seb that I've been toting since '02 sorta settled in at %75 percent and has not moved in a year or so. But I don't open mine with the force of the Heavens either...
Rather than hypothesizing inside our CRK microcasm (sp?

), don't be afraid to pick up the phone and call the shop. Talk to the Foreman, or heck, ask for Chris or Anne. I have, and I know that Chris appreciated answering my questions directly rather than my drawing my own conclusions, or worse, ruining my Sebenza!
Professor.