Are you sure that the baseboard that you replaced was the version supplied at time of manufacture?
In addition many commercial enlargers were employed using roll paper holders and a variety of other configurations that meant that one would either augment or replace the baseboard with a support that was appropriate for the intended use.
I worked for years with an Omega D6 with an optional extended baseboard that was 36" (~1 meter) deep, because that was appropriate for my use.