Nevertheless, they managed a major comeback in 1966 with "Don't Mess with Bill", along with several other hits. They struggled with problems of poor promotion from Motown, health issues and substance abuse with Cowart the first to leave in 1963, followed by Georgeanna Tillman in 1965, and Gladys Horton in 1967. The group ceased performing together in 1969 and, following the release of "The Return of the Marvelettes" in 1970, featuring only Wanda Rogers, disbanded for good, with both Rogers and Katherine Anderson leaving the music business.