I have just acquired a base for my ASR33 (thanks Nick), and I'm looking at how to attach it to the 33.

I'm a little perplexed as to how the tape reader power unit attaches to the base. There does not appear to be any holes on the base in the position shown on the diagram for the power unit.

Are there clips that I'm missing that are used to hold the power supply to the top inside of the base?