I had some heads put on my 02 Dakota with the 5.9 in it about 3 months ago. I just started to hear a knock and the shop that put them on said the rocker arms may need tightened as they should be broke in now and they may have wiggled loose. (moved out of state so I can't take it back to them) I thought that the rocker studs just had torque settings for them but they said this was incorrect, can anyone tell me the correct way to make sure these are tight. I am very mechanically able, don't usually work on newer vehicles, but long as I don't have to deal with electrical I am ok haha. Thanks