I picked up a Bronica SQ-A a few weeks ago, and until recently the darkslide interlock worked properly and the camera wouldn't fire if the darkslide was inserted. However, when I was fiddling with it today it was firing with the darkslide in.
The problem doesn't seem to be the direction the darkslide is inserted or anything like that; the tab on the darkslide still engages the pin on the back, and the interlock that won't let me remove the back unless the darkslide is in still works fine.
I was fiddling with it a bit yesterday when I had engaged the lock on the speed grip without realizing and couldn't figure out how to get that working again, so it's possible I broke something while doing that. It's not a huge deal, it just means I need to be more careful about whether my darkslide's in or not, but it is a little bit annoying.
Any ideas?