This thread is a little dated, but wanted to share my findings this morning with the Forum. I took the airbox off the engine this morning and started checking the valve cover screws (large size) for proper tightening torque. I found only 1 screw still torqued to the recommended value of 10 N-m. All the other screws were somewhat loose and were tightened to the proper torque. I do still have 4 screws along the bottom of the valve covers (3 on PS rear; 1 on DS rear). Can't remember how I got to these before but it will come to me. I didn't remove the coil packs before when I did this task. Also didn't check the crankcase breather cover screws (small ones) for proper torque setting of 5-6 N-m but will do so later after weather clears up. (Note: I have corrosion resistant coated steel screws installed on the crankcase breather covers, so can re-torque , if required.). I recommended several years ago to check the torque holding settings on the valve cover screws and it's been probably 4-5 years since I did this task. I still think it is a good PM task to execute periodically.

Before I re-installed the airbox, I sprayed some silicone lubricant on a paper towel & wiped off the "rubber baby buggy bumpers" that secure the airbox. I also wiped the airbox rubber seal that fits over the throttle body at the rear of the motor. Just makes install & removal later on much easier.