By Sam Laskaris Writer The Six Nations Rivermen continue to tinker with their roster. But one thing is remaining constant. The local Senior B lacrosse club continues to rack up victories. The Rivermen now find themselves on a nine-game winning streak after registering two more wins this past weekend. For starters, the Six Nations club downed the visiting Owen Sound North Stars 13-7 this past Saturday. That match was held at the Six Nations Sports and Cultural Memorial Centre. And then on Sunday a shortstaffed Rivermen club pulled out a 9-7 triumph over the host Ennismore James Gang. That tilt was at the Robert E. Young Recreation Complex in Ennismore. The Rivermen only had 14 runners and two goalies show up for the contest in Ennismore. “Some of the guys…