3D HP67 Parts Availability?

[Peter Face]

This thread interests me because I am shortly going to re-install the head in my HP67 card reader. My overzealous cleaning dislodged the head, but I noticed how the head was attached in place. The heads and photos I have looked at show the head is centrally positioned in the mounting slot, but I needed to know how the head face was in relation to the card slot floor.
Measuring my HP97 card reader showed its head was just above the slot floor by 0.4mm (I hope my measurement was good.) I wonder if anyone can verify this?
There are 3 small holes into the head slot through which some RTV type adhesive was injected.
I am waiting on some shim to hold my head in place and plan to inject some E6000 glue to mount the head.
Peter