w110 , ’66, clutch transducer cylinder

Hello all, I was helped here recently, therefore another question. After coupling and gear change on my small diesel fin a question arises to me: Does a spring belong between the driver cylinder and the pull-out lever ? Hook holes are there on both sides, a spring is also available and would fit. Thus the reset power of the clutch would be increased. However, this spring pulls back the take-over piston even when not operated and pushes the oil high into the container. Doppeln is then far too much play and the clutch does not open. Without the spring it works (was also before the change so) What did I probably overlook or not understand? Thanks for helpful clarification. mfg Ploetsch10 PS: Can a connection with a licking donor cylinder exist?