Two loops of the protein act as pontoons, forming
the main Contact points with the membrane.
You put a small amount of grease on
the main contact points were the shoes / pads meet the brake calipers, slave cylinders and shoe backplates.
Inside,
the main contact points are unique to the Golf GTD — a flat - bottomed steering wheel, a GTD gearshift and a standard tartan interior.
Though the overall fit and finish is to a very good standard, with a pleasant solidity throughout and lots of high quality plastics and leathers on
the main contact points, it's pretty evident that some cost cutting measures have been made.
However there's no avoiding that
the main contact points are with plastic, not metal.