I just got done installing my f3o3 cam over the weekend, and when I got it done there were no noises at all now.... a few days later. I sounds like alittle clicking comming from the passnger side valve cover. Could they have come loose? or should I have retightened them anyways? all I do was torque them to 25 ft lbs sping th emotor over and do it again a couple times...