k are u supposed to put blue lock tight on the valve cover bolts when u reinstall the cover? cause i put the cover on a few weeks ago, and im taking it off again today to changge the thentioner, and the bolts have worked themselves pretty loose over the 2 weeks. i had them at 72-75 inch pounds and some of them were id say like 30 inch pounds now when i removed them. So blue lock tight, yes or no, or just run it a few days and tighten them up again?