Avid (SRAM) Juicy bleed block / caliper spacer

I have a set of Avid Elixir 4 brakes which appear to be an OEM option for Specialized. They are Avid Elixir levers, but with Avid Juicy callipers. As such I needed a bleed block for Juicy brakes which don't appear to be easily available.

They don't have a particularly firm 'click' when they engage the retaining clip, but are good enough for me. They have the grove in them on both sides to go over the pin on the calliper piston and also the clip part is not full width. As such you probably n