By Sam Laskaris Writer Things were not looking good for the Six Nations Chiefs early on Monday night. The Chiefs found themselves trailing 5-2 early in the second period of Game 3 of the best-of-seven Mann Cup championship series. The Six Nations squad, however, managed to keep the Victoria Shamrocks off the scoreboard for the remainder of the match while scoring five unanswered goals themselves. And with their 7-5 victory, in the contest held at the Iroquois Lacrosse Arena, the Chiefs now lead the national Senior A championship final 2-1. The series resumes Tuesday night at 8 p.m. All of this year’s matches are being staged at the ILA, the Chiefs’ home rink. Six Nations had a rough start on Monday night. The Chiefs found themselves down 4-2 after 20…