If your Enlarger is one of the early Leitz AF versions and want to retain the AF, you may be struggling because as I recall from a Leitz manual to retain the AF, the lens has to be calibrated, and not an easy task, if at all possible. Apparently it is all down to the back focus (rear element to film plane distance)
The Leitz Valoy II is without Automatic Focus. You are talking about the Focomats. Although
the AF of the Focomats is wonderful and they are great enlargers, I do prefer the Valoy II and I wish Leitz had developped this into a more mature enlarger.
But, I understand they did not, it would have competed with the Focomat Ic. So, I did it myself and had a coupler made between the columns of the Ic and the Valoy II. To bring the lens away from the column the same distance the Ic has.
The best thing about the Valoy II is the large helicoid that houses the lens. It is easy to clean these and give them new grease. You can take them apart, but you do not need to.
This 35mm enlarger takes any lens with the usual 39mm screwthread, I use it with a 38mm Olympus lens for half frame, and 40mm to 60mm lenses for 35mm negatives.