I had 2 lifters come apart on my 99 Beetle TDI damaging the head and camshaft, and I changed the head (used). I now have a rapid oil leak that seems to be between the crankshaft (seal replaced) and the head. Head bolts holes cleaned prior to putting new head gasket and bolts and torqueing to spec. I replaced the camshaft seal even though there was not any leak. I checked the oil gallery plug and it is not leaking. I can find no other place to check for leaks. HELP