There is two different Bluetooth setups depending if you have gloss or anti-glare screen. Only the anti-glare model has the Bluetooth board mounted near the optical drive.

You are correct this model has the AirPort board sandwiched in the clutch cover.

Follow this guide MacBook Pro 15" Unibody Mid 2009 LCD Replacement which you can see is the same procedure as the older model direct instruction on how to get to the clutch cover and the AirPort board: MacBook Pro 15" Unibody Late 2008 and Early 2009 Airport Card Replacement

But before you go down this path make sure you have double checked your connections and see if you have any damage on the lid which could effect the antennas.