I recently completely dismantled a P79 head to take for a valve job and bead blast. I can't find the torque value for the bushings that that the rocker arm pedestals screw into in any of the books that I have (Chiltons/Haynes). These screw directly into the top of the head (12 total) and have a 17mm hex. I don't know if the FSM has this value. Please help. Brian