But once again, having absorbed the pressure, Metro just turned their speedsters loose to dash away for some stunning five-pointers.
"Once we break out, they're off. Keeping the ball in play and having continuity."
Jack O'Leary scored another hat-trick of tries, while doubles came from barnstorming prop Emanuel Savage and fresh winger Cody Davy.
First-five Joey Devine finished with a 28-point haul from two tries and nine conversions.
Cosford said hooker Blair Harrison scored under the posts to cap off a "brilliant game" where he was named man of the match.
It made for a fun trip home for the team, who hired a bus to travel as a group and all dressed in a western theme for the evening.
The big 83-3 win maintained Metro's seven-point lead of the table from defending champions the Feilding Yellows, with both teams having two games and a bye remaining in the regular season.
But Cosford is expecting a challenge from Saturday's away trip against Massey University RC, who kept alive their semifinal hopes with an important 38-24 win over Feilding Old Boys-Oroua.
Massey moved to three points behind fourth-placed FOBO, with an extra game in hand.
"Massey's starting to have a bit more impact on the competition. They'd love to take our scalp," said Cosford.
"It's just a matter of keeping our boys on their toes."
