i ve tried to search but cant seen to find what im looking for.
2 questions
1. decided to adjust tappets yesterday and once i had the rocket cover off turned upside down and booyah... milky under there... is that BLOWN HEAD GASKET.
or crud 
2. I have inconsistent oil pressure. when cold seems ok 50-60 and 40 at idle =500rpm . when hot pressure at about 50,, and as of recent 20-25 at idle... also sometimes stalls when hot and at that pressure when in neutral.------ is this oil pressure ok (in saying that i do know that others have 60 psi consisently). if not could that maybe a result of the above #1 qestion and being blow gasket.
just a little confused
cheers