If you are failing the DPS check in that fight then the group you are running with needs to get better at their classes.

Healers should contribute more dps to help out, DPS should study up on their rotations. The DPS check on the add phase isn't even that tight compared to checks we've had in the past, I don't know how you can be having a consistent problem there. Usually pug groups fail at fang and claw from it getting healed too much.