In the docs it say: "Note how the couplers (15) assemble with the lettering facing upwards." I did this, and also found that you should push in the ring shaped part first, and the middle bit after. When I test fitted the parts (before pushing them in to the printed cable bracket) I had noticed that if the writing was in opposite directions the fit was snug. However, now I've fitted it all together, the bowden coupling rattles in its position (the middle part). Is this correct? Thanks!