I've had the head off four times. Lmao. I resurfaced the head, annealed the copper gasket, cleaned with scotch bright and acetone really clean, sprayed it with copper spray, three coats and torqued head as manual specifies. The only thing I can figure is cylinder needs to be resurfaced. Gasket was stuck to head well and not cylinder so much, which leads me to believe it leaked at cylinder. I'm installing a cometic head gasket when it comes in. I got some three bond 1211 too, as someone suggested. I think the rattling could be my skid plate or nerf bars. I'm taking them off to verify before removing clutch cover, I guess. Lol. I should've rebuilt this motor myself instead of taking it to a local shop or better yet, sent it to Carl or Jerry.