Tim Bachman left the band in early 1974 shortly after the release of "Bachman–Turner Overdrive II". Randy Bachman had very strong religious beliefs and established rules to be in BTO. Among them was a rule that drugs, alcohol and premarital sex were prohibited on tour, and Tim is alleged to have broken all of these. It is said that he was given opportunities to change his lifestyle and did, at least temporarily. Said Randy in a 1974 "Rolling Stone" interview: "I know from experience what can ruin a good thing. Drugs made the guys in The Guess Who change. They got sloppy. They ruined themselves and their marriages." Some other accounts state that Tim left because he was getting married and wanted to study record engineering and concert promotion. But in a 2002 interview, brother Robbie said, "He was basically asked to leave. He wasn't BTO caliber it was difficult to rely on him. I guess the band was conflicting with his whole life."