Ok, Ive got a 318 with a .528 solid running .026 lash on all. I'm trying to check the piston/valve clearance without the stock adj.rockers on. with the piston at TDC and the head sitting on the block with no head gasket, moving the valve up and down between the seat and the top of the piston i've got approx .165 of movement and i'm confused, very confused lol. Thanks!