Whenever the obligations of a mortgage are assumed and agreed to be paid by any one or more persons who were not parties to such original mortgage, no fee in excess of seventy-five dollars ($75) or as otherwise provided in the mortgage contract shall be charged by any savings and loan association, bank or other lending institution for the services connected with making appropriate changes in the books, papers and records of the savings and loan association, bank, or other lending institution.
K.S.A. 58-2335