RALEIGH -- Sometimes things don't have to start off perfectly to end well. Four months ago, North Carolina's women's swimming and diving team lost to No. 1 Georgia in its first dual meet of the season. The Tar Heels haven't lost since.UNC overcame season-end exhaustion and preserved its perfect conference record Friday by knocking off N.C. State 149-92 in its last dual meet of the season."It's a really long season," junior Summer Mack said.