I recently bought a Fleischmann H0 5102 Bahnpostwagen which came with the old hook couplers and no close coupling mechanism. I have Profi couplers on all my other rolling stock and went to replace the hook coupler with the 6516 Profi-Schlitzkupplung but discovered that the centering springs are missing so the couplers do not automatically center.
I was able to buy some 6522 Coupling centre springs but they are a different shape from what I remember (they are longer and narrower).
Here is the shape of the new ones:
and here is what my other wagons have (and what I remember), shorter and wider:
The instructions on the new ones say to cut them to fit but I've been unsuccessful so far. Does anybody have any experience with these? I'd appreciate any advice.