I assume you've gone over the info on the Baader page, the manual is on the Download tab https://www.baader-p...-binocular.html
Their pages don't seem to make the search engines, but Company 7 has a great page at http://www.company7....aaderbinoV.html
Glasspath Correctors, absolutely. Not usually needed, just an option, but check the Mark V manual. Newts and some refractors encounter issues.
When I got the baby Maxbright, I immediately got the Glasspath Correctors, very reasonably priced and very useful. They solve many back focus problems as well. Usual superb Badder coatings and glass.
I would simply ( until the wallet cries 'uncle') pick up the other half of the pair of whatever works for you now. I built pairs of my short Naglers and medium Widescans.
Eddgie is spot on on checking diameters of eps. I do not have numbers for usable diameters, but you can get an idea by pulling Baader Zoom MK III and Mk IV dimensions from their site. Not recommending the Zooms given your setup, but they do help see the issues on bino use.
They fixed lots on the III but three of the biggest changes were to allow use in APM 'binoculars', really double telescopes. One was a slight back focus mod, the other two were slimmer main bodies and removable lightshields to let the eyepieces get closer, and for room for the poor nose.
If looking for ready for bino pairs, it is really tough to beat APMS Ultra Flat Fields. Made for bino use, 65-70 degree afov, usable body designs on binotelescopes. Great reviews and comfortable in use. And affordable. Don at eyepiecesetc will have them. I think APMs PA operation might still be offline, not sure.
Edited by markb, 24 July 2020 - 11:16 AM.