Looking for a head gasket kit for my LC. The headgasket is seeping very slowly along the passenger side midway along the length of the block. Anyhooo.... what is a "Valve Grind" kit relative to a regular gasket kit? Are there some type of tools in this kit? Found that the gasket kit for a '94, PN:04112-66032 has been superceded by PN:04112-66035. Are these "Valve Grind" gasket kits?