Thank you for this reply.
I'm a newbie and probably am missing something. but first of all, no screw of appropriate length (to go through the Tilter, come out and enter the EFW casing) is supplied with the adapter kit. Secondly, for any screw to go into the Tilter, it must be exactly M2.5 in width; but when it comes out, it needs to be slightly smaller in order drill into the EFW casing! Thirdly, the 4 screw places shown in your diagram are only available if the plates of the Tilter are separated - which is not the idea of this solution, Approaching the problem from the screws perspective won't fly.
I noticed that the EFW filter hole is M540.75 and the plates are T2 (M420.75 thread). So I bought a Pegasus M54M-M42F adapter which combines with the T2-T2 adapter on one plate, and the camera screws into the other plate. All in all, it gives me 54mm or 55mm of back-focus (I haven't measured exactly, yet) so I think I'll pursue this avenue instead.
I think your product solution to connecting a Cooled camera like ASI294/ASI1600/ASI183/ASI533 to a 2” EFW filter wheel needs an updated description and perhaps a different solution.
