I am replacing the head gasket on my M7950Dt, head was shaved for minor warping. I was concerned about clearance for injectors/glow plugs/valves due to head being shaved but the local Kubota Part dept advised me that this engine was supposed to come with a head gasket shim in addition to the head gasket. When i had removed the head originally (had never been removed previously) it only had the factory gasket & no shim so I believe that using the shim at this time of reassembly will allow for the correct spacing BUT this type of head gasket should NOT be used with any type of additional coating but in my training years ago as a tech we were told to using coating on items such as metal head gaskets or shims, so what do you think? use it only on the head face of the shim or both side or none at all? too many years out of the field....