The "Chicago X" album yielded the band's first number 1 single, "If You Leave Me Now", which also earned two Grammy Awards (best pop performance for the band, and best arrangement for Guercio). However, Guercio and the band members found themselves increasingly at odds over creative decisions, tour schedules, and finances. They parted ways soon after completing "Chicago XI" in late 1977 as a result of the discovery that his contract paid him 51% of profits, with the other 49% going to the other eight members of Chicago, who split it evenly. Upon discovery of the inequity, band members decided that it was time for a change. In the CNN Biography: "Now More Than Ever: The History of Chicago", the groups' discontent with Guercio was revealed, indicating that "millions of dollars" had gone to Guercio, under his tenure as band manager.