Kevin_A if you find that you have a bit of slop or sag or gap in the filter drawer fitting to the Rokinon lens as I did you can fix it easily by adding Tuck tape as shown.
The ZWO filter drawers, after at least 3 different redesigns, are finally pretty usable.
The latest drawers have the filter holder seated flush with the body of the drawer, and finally (mostly) solved the light leak problem of the previous ones. I threw about a dozen old ones away (actually sent to my dealer so he can give them away for free to people who are willing to apply electrical tape each time they change filters). The new EOS flange is likewise pretty good and very tight. I remember an older version (with the round push pin) that had a wobbly interface, and impossible to use (that is why one of my EOS filter drawer is from Starizona).
Between the ZWO EOS filter drawer and custom drilling and tapping the EAF and camera rings, the Rokinon Cine setup is actually quite minimalistic. Everything (including a USB-C hub) on a single 7" ADM Losmandy dovetail plate. Added my standard rack handle of course.
BTW, since the small body of the 585 precludes it from using the M54 tilt plates, I cobbled up enough Frankenstein spacers to replace that black T2 ring with a 54mm interface that maintains 11mm optical path, so the ASI585 can simply be a drop in replacement for my 6200 with the 54mm tilt plate. This, while waiting for PreciseParts to mill a proper 11mm M54-M42 female-female ring for me. PreciseParts have improved their turn around time a lot -- now perhaps down to less than a week before they ship. So, just waiting for camera and weather now. Most dealers are out of the cooled 585, and I got CloudBreak's last one. I had initially thought that it is just a poor man's cooled camera; but the smaller pixels swayed me -- the 6200, 2600, 533 pixels are just too large for my small scopes. Before the 6200 series, I had used the ASI071, which also had large pixels, albeit not as large.
Chen