I understand that this is easy to be fixed. But where can I find a detailed drawing of where both ends (one with a spring) are ankered exactly and how to access these spots (from underneath)? Sorry not enough of an expert maybe?
Check out the service manual either here as a Silver Member or at beomanuals.com. You need to open it from the top and you can find the endpoints on the large pulley and near the left of the tonearm base illustrated in the manual.
Thanks a lot very helpful. Challenge will be to put a small screw and bolt (best?) into that hole as an alternative to the missing/broken plastic part (as it probably was). Can you easily lift the gliding part from the 2 trails for easy access? Or do you have to remove these first as well?