my timing was off on my civic due to a bolt that didnt belong. i bought three new bolts and i screwed them on to the right timing. i have an aem tru time adjustable cam gear i put it on 0 and i screwed them on tightly. after i turned it on it would rattle every time i would give it gas. and the rattling sounds slightly from the gear and a little from the engine like from the head???i dont know what it is??