Kaberle could do more on PP/By S. Bradley

WILMINGTON, Mass. — The Bruins spent a decent chunk of their ice time at Ristuccia Arena today trying to iron out their power-play struggles.

Boston’s 22nd-ranked man-advantage is now two for its last 34 attempts.

The Bruins stuck with three units today again, with a couple guys doing double duty. The long-standing first unit of Zdeno Chara, Tomas Kaberle, David Krejci, Milan Lucic and Nathan Horton stayed the same. The second group featured Patrice Bergeron moved back to the point, where he played briefly Saturday night in Toronto, opposite Dennis Seidenberg, with Michael Ryder, Tyler Seguin and Brad Marchand up front.

Bergeron moved to forward on the third unit to join Rich Peverley and Mark Recchi, with Johnny Boychuk skating next to Seidenberg.

One somewhat new wrinkle on the first unit was the movement of the D, with Chara and Kaberle pinching in more along the walls. One drill actually ended with Kaberle down on the goal line for a tough-angle shot and another had him at the left dot for a shot — and both times he actually fired the puck toward the net. A less-gun-shy Kaberle would obviously be a boost to Boston’s chances of scoring.