PLEASE READ!
The shipment from Link has arrived.
There are some issues, primarily the fact that the holes punched in the bracket / sled are mirrored from the correct location (see pic).
Kevin is working on getting correct replacements made, I told him that powder coating is not required on these so that may sped things up. It is actually better as bare metal as this is the only side shielding, and the 500 series format relies on it. The spec requires pin #1 connect to a mounting hole that electrically contacts the sled for this purpose.
It is possible (and not difficult) to place the PCB on this part, mark the correct hole location, and drill or punch the holes. This is thin aluminum.
If anyone would prefer to do this rather than wait for replacements (and possibly swap out later) I can go ahead and send what I have.
It will require separate shipping if you want to do this then get the replacement when they arrive.
Let me know by replying to the ongoing PM message where you were contacted for payment.