In Reply to: Hydraulic Touch Control Slipping posted by Lexie Kensington on November 19, 2022 at 16:08:37:
There is a friction disc behind the handle mount and there should be a spring under the nut. The mounting plate usually seizes on the shaft so that tightening the nut doesn't increase the pressure on the disc. Quite often the mounting plate will be destroyed trying to remove it. For a temporary repair you could try tapping the plate in with a socket over the nut as you tighten the nut.