My new (to me) Mamiya 7II has suddenly decided it doesn't want to switch away from the 150mm frame lines. When I mount the 65mm, the lines don't change to the 65mm ones. This just started happening while I'm on vacation in Utah this week. A day later I broke the little shutter curtain lock thingy into two pieces. That piece seems pretty flimsy. I love the camera, but this hasn't been a good week for it. Maybe Capitol Reef NP is jinxed?