I have received my firewall forward and as I am bolting the fire wall to the fuselage I see the bottom of the firewall tucks under the lower longerons. What holds this piece under there? Do I need to remove the rudder pedal assembly and run the bolts thru the firewall flange that tucks under the fuselage? I'm not sure the bolts are long enough, I am not seeing the instructions for this, they must be there, I just don't see them.