TT Piko Taurus - fixing too short couplings

Original Piko Taurus locomotive has very short couplings. This makes troubles for number of cars, not only on low curve diameters. In this photo series, you will see, how this is fixed, using 1mm plastic card and 0.5mm brass wire. The cut coupling parts and a top 1mm plastic part is put on an adhesive tape, glued together using Loctite 401, then the second bottom part of 1mm plastic is glued onto it. You must leave enough space around the hole, to allow free movement when mounted to locomotive. Then drill 0.5mm holes at each end - so the old coupling parts are connected to a bottom (longer) new part in the middle. Cut ~2-3mm of 0.5mm brass wire and glue it into the holes. Finally sand the top surface, to allow smooth movement. I do it using a small rotary diamond disc.