Kerscher 944 brake conversion parts

[eldavid]

The aluminum spacers are an adapter to fit the Beetle's cable sleeve to the 944's backing plate, they also take up the slack in the cable.

I don't quite understand how the Kerscher spacers are to be installed. Are they supposed to replace the stock 944 "spacers" or attach to them somehow? It seems to me that I have to remove the 944 "spacer" and pop in the Kerscher spacer. If I have to pop in the Kerscher spacer, how do I ensure that it stays on? See pics for reference.

-emerson