By Arielle Aronson/DFP StaffJust seven games into the college hockey season, the No. 16 Boston University men’s ice hockey team has been repeating certain themes that those around the program have been seeing for a few years now.One of the most obvious areas of repetition is of course the inability to get themselves motivated for games against “lesser” opponents, but another alarming trend has been a sputtering power play.This season, the Terriers have converted on the power play at a paltry 11.1 percent rate, and they are 1-for-18 on the power play after scoring a power-play goal in each of their first three games.BU coach Jack Parker said he is troubled by the team’s continuing struggles with a man-advantage and was the first to take the blame for the lack of production.“If we’re not better on the power play, it will be my fault because we have enough talent to make that work,” Parker said. For more, visit dailyfreepress.com.