By Charlie Adams NEFJ Staff WARWICK — Razor-thin finishes are no stranger to Johnston and Pilgrim. Two weeks ago, Pilgrim beat Johnston in a 52-50 double-overtime thriller. This Friday’s rematch in the Division III quarterfinals delivered another exciting back-and-forth, ultimately decided by one point. No. 2 Pilgrim squeaked past No. 7 Johnston in a 28-27 victory. The Panthers finish their season 2-7, while the Patriots (6-3) will face No. 3……