Well, this sucks.
Sometime last saturday, the screw keeping the frameline-preview lever of the M3 in place unscrewed itself. I found the screw again, luckily it fell out indoors, but I’m afraid the lever itself fell off later, outside, and I haven’t been able to find it again.
Luckily, this is the only control on the camera that isn’t needed for actual shooting, but it’s still annoying.
If anyone has suggestions on where to get a replacement, please let me know in the comments! I’ve looked at DAG but he currently only has the (fugly) M4-style levers in stock.