My first Alfa, 91 164, with a few issues I’d like to tackle. A few electrical things, so wish to get into fuse/relay box under left dash. Seems there’s supposed to be a ‘safety knob’ Under drivers wheel....I don’t have, guess it got broken off. When I spy up the hole, I see what may have been a bolt, or key, but is now possibly drilled out? Any idea how that fastener works ? Was the knob a screw bolt or some kind of latch ? Any advice that get that panel out gratefully accepted!