Raiders enforcer Joe Tapine has admitted it is time he rethinks his approach to the game after being handed a two-match ban just three weeks on from his last indiscretion.

The 24-year-old was found guilty of a dangerous tackle on Bulldogs hookerĀ Michael Lichaa during their clash last week and failed to get his suspension overturned by the judiciary.

Tapine missed two games in May for a shoulder charge on Dragons fullback Matt Dufty and has received carry-over points from three previous offensive in the last two years that added to his current suspension.

It is a massive blow for Ricky Stuart's side ahead of Saturday's do-or-die clash with the Cowboys, who will already be without fullbacks Jack Wighton (disciplinary reasons) andĀ  Brad Abbey (concussion) as well as prop Shannon Boyd (calf).

And Tapine conceded there are parts of his game that need to be addressed.

"There's certain parts of my game that do need a look at, but I definitely don't want to lose my aggression," Tapine told NRL.com.

"That's definitely still a part of rugby league, and it's the main part of my game. It's a fine balance, I've just got to tweak some aspects of my game and get back to training now."

In addition to this weekend's clash with North Queensland, Tapine will also miss Canberra's round 19 trip to Cronulla to face the Sharks.

Prop Liam Knight or rookie Jack Murchie shape as potential inclusions into the Raiders' 21-man squad.