Hi,   I was wondering if a Cork og Silicone gasket for the oil sump exist? instead of the "paper" gasket everyone supplies  I have concluded, that my sump do not seal tight against the block, as just about all bolt heads have a drip of oil on them and everything else including the uprated rear main seal are dry. I am thinking that perhaps the sump has warped slightly around the holes, from overtightening over the years.   Do you fine chaps any info here... please le