By Gilberto Manzano For the past few weeks, I have checked the opening total lines for games involving the Panthers thinking it might go under 30 points. I’m going to have to keep waiting, because Panthers-Packers received a generous total line of 36.5 points, according to SI Sportsbook. The Panthers won last week, but they beat the Falcons, 9–7. The Jets also have one of the worst offenses in the NFL, but the total line for Jets-Commanders is 37.5 points, partly because of Washington’s poor defense. Maybe I’ll see a total line under 30 points before the end of the regular season, but until th…