Desharnais I can understand because you want Pacioretty out there and they're attached at the hip, but put Chuck on the other side and have him come off the half wall.
My point being if you want to score goals by being a grinding team, start playing players on this team that can grind down low and have the skill to create chances and score goals. Eller and Galchenyuk are two players that have a bit of size and can battle down low and use said size to win battles and protect the puck. Bourque has size but doesn't use it like he should/inconsistently. Pacioretty protects the puck well but is nowhere near being a powerfoward.
If you want to be a gritty, grinding team, for the love of God stop playing Gionta on every PP, much less with Bourque on the other wing and give more chances to Eller and Galchenyuk.