Santa Fe '03 2.7 Litre motor, to get to the back plugs must remove the intake plenum. I got a new gasket, but wonder whether there is a recommeneded tightening pattern for the 5 bolts to minimize warping.... and what the torque specs might be. I could not find anything about the plenum on the hma website searching for plenum, tune up, spark plug, and intake. TIA. KWW