The more I think about this, the more tempted I am to start with hydraulic items like the flexible hose as you suggest. It would be a pointless exercise to replace a clutch that only slips because the hydraulics don't always allow full engagement. What a pity space is so tight around the slave cylinder between the transmission and floor. Oh well, I guess it is still easier than removing the transmission and everything else that is required to replace the clutch.
107.023: 350SLC, 3-speed auto, icon gold, parchment MBtex (sold 2012 after 29 years ownership).
107.026: 500SLC, 4-speed auto, thistle green, green velour.
124.090: 300TE, 4-speed auto, arctic white, cream-beige MBtex.
201.028: 190E 2.3 Sportline, 5-speed manual, arctic white, blue leather.
201.028: 190E 2.3, 4-speed auto, blue-black, grey MBtex.
201.034: 190E 2.3-16, 5-speed manual, blue-black, black leather.