Armory link? Logs? Ascension/Chi Brew?
Are you using energizing brew?
Do you have a 10 percent melee haste buff in your raid group?
Just because the guide says 8-9k haste doesn't mean you should run with it, some people are comfortable with more and some are comfortable with less
Fists of fury is a dps increase if used correctly, add ons help with usage as its only under certain conditions.