Hi Mark,
         I have the gottlieb 1968 catalog here.If you pm me your address I can send you a copy of all the part numbers covering(cabinet,door,litebox,,pedestal,replay unit,gear&shaft,disc,wiper,motor cams etc for all machines between "Gaucho1963 and"Seaside late 1967" You can cross reference for part suitability for your K&Q's.Some parts on your "Sweethearts" are the same.If there are any other diagrams you need let me know and I'll do them.
                                    Ian