One tiny thing about Ed Penner, he played bass sax until 1950, but was with the band until his death in November of 1956. Frank was with the band basically from 1955 to 1966, but his activity started to taper off in the years following 1962. Monte Mountjoy was with the band until Jimmy MacDonald returned in about 1955. George Probert joined the band in January of 1954. I will try to ask George when John Smith became a substitute when I next speak to him. K.O. Eckland took over on piano when Frank left the band. I have some live tapes courtesy of George Probert that have Frank on piano in August of 1966. The last recorded evidence of Frank in the band that Iknow of comes from November of 1966. I am sorry that I confused you with my initial post. I hope this helps!
