Thank you!
Ladder progress. I'm not sure how the pulley system works on the real one, so I don't know if I'll make it functional or just glue everything together.
I think I finally found the perfect water tubing for the monitor. 3mm ID, 5mm OD, 1mm wall thickness black silicone tubing. I tried 0.5mm wall thickness too, but that was way too thin and would kink at almost any bend radius. This one doesn't kink but is still very flexible and won't stress the servos.