NEW YORK — A little summer momentum kicked in on Broadway during Week 2 (June 6-12), with overall sales up despite a handful of productions playing fewer-than-usual perfs over the frame to allow for Tony activity.With the run-up to the June 12 kudosfest helping to direct interest toward Main Stem fare, most individual productions posted gains over the prior sesh. Tony darling “The Book of Mormon” ($1,184,507) broke the house record at the Eugene O’Neill yet again. Winner of five Tonys, “War Horse” ($919,440) also continued to gallop ahead. The 22 musicals grossed $17,548,586 for 81.5% of the Broadway total, with attendance of 199,954 at 79.2% capacity and average paid admission of $87.76. The 10 plays grossed $3,992,040 for 18.5% of the Broadway total, with attendance of 52,661 at 68.1% capacity and average paid admission of $75.81. Average paid admission was $85.27 for all shows.