I believe there is an adapter for that which allows one to use 39mm lenses.
As Bob-D659 says, however, it might be possible to bore out the lens board. It might not have to be threaded if there is enough room for a jam nut.

Your enlarger brings back memories. We had one in the college darkroom where I spent far too much time in the early 1960s. It's really a capable enlarger.

I believe the Schneider thread is 25 mm.

Let us know how you make out.