Warringah Rats assistant coach Damien Cummins believes Saturday’s tough 27-17 preliminary final win over Manly was the perfect preparation for this weekend’s decider. In front of a packed house at Rat Park, Warringah upstaged the minor premiers to book a clash against reigning premiers Norths at North Sydney Oval on Saturday afternoon. “It was a good game to have, it was a good solid hit out played in front of a pretty decent crowd and it was good quality right across the park,” Cummins said. “I don’t think you’d want to go into a grand final on the back of soft games and fortunately we came out of the weekend without any injuries. “If we can play to our potential, we’re going to give ourselves a good chance to win.” While Cummins admitted it wasn't a perfect performance, the former Manly mentor said winning was all that mattered at this point of the season and highlighted the breakdown as the key area this weekend. “I was really pleased with our