Anyone familiar with NAS1834, NAS 1832 and NAS1836?

Hi;

We're building hand controls for the disabled as part of the Freedom's
Wings program in Canada, and the designer/engineer has specified the
following epoxy potted insets:

Three NAS1834-5-750 Substitute TYE2003, SL603, D1834 or
AEP1034-5-750
Three NAS1832-5-16 Substitute TYE2002, SL601, D1832 or AEP1036N-5-500
Eighteen NAS1836-3-20

The last one is easy to get, but the first two do not seem to be in
stock anywhere. I've tried TYE's distributors, Interfast, Wescoair
and Genuine Aircraft Hardware and MANY local and internet suppliers.
we are into triplle digit e-mails now and hours on the phone. Most
suppliers seem to have inventory systems taking them right back
through the supply chains to the manufacturers, who are quoting 16
weeks delivery, and I haven't even told them I only need a few.

I am hoping that someone on this list works for an aviation company
that uses these parts or parts from a supplier that carries these
parts. Are there any sitting on a shelf somewhere? Can someone
leverage thier suppliers to find them?

Other than final Transport Canada approval of the "as-bilt" drawings,
it's the only thing in the way of setting this done.

Thanks!

Martin