Now I know I am an idiot with two left hands but I've never had an issue with the fuse box. Takes me 5 seconds to take them off and put them back on. Never understood why others are having so many issues with it?
Unscrew both knobs, tilt bottom of cover plate as far forward as it'll go, lift up the right side (standing in front) a bit, and you can clear everything and pull it out easily.

__________________
"The MB W123 is so bulletproof, you can drive them forever. Which is a good thing as it takes that long to get anywhere."
Betsie: 1984 W123 300D (hobby, 280k miles)
Myrla: 2001 Mazda Protege 2.0 ES 5spd (daily driver, 130k miles)
The Turd: 2007 Toyota Camry (wife's car, 118k miles)