Sounds like she's stuffed mate. Give ya fifty bucks for it, leaks and all........
The little holes of which you speak are probably the drain holes for the spark plug recesses in the head (so that any moisture that gets in there does not fill up the plug recess.)
Sounds like the ring of the cam cover gasket that surrounds the back plug recess is incorrectly installed, allowing cam chamber oil into the plug recess, and then out the drain hole. Lift the rear plug HT lead and look. If so, cam cover off again to fix.