Eugene Organ was added as a fifth member on guitar for the following two albums, "Lines" in 1978 and "Fight Dirty" in 1979. The band had its biggest hit in 1978 with "She Loves to Be In Love", which peaked at #54 in the US. In the following year, the band had another minor hit with "Killer Cut", which rose to #60 in the US. By this time, Shep Lonsdale had been added as an official sixth member, playing drums and percussion alongside Gadd on all of "Fight Dirty".