i got a new head set ,cleaned the surfaces well and torqued the bolts exactly as per the manual...well several weeks later it began to leak oil from the midle front of the head...quite badly infact
so i figured i must have sliped up somewhere, maybe damged the gasket...anyway i did another gasket job , again i was very carefull to clean everything very well....guess what it leaked just as bad
well i desperation i decided to go around the head bolts with a torque wrench and i nipped em a little more....the center 2 bolts which are first in the sequence were not as tight as the rest.
i cleaned it up and its fine now...i wonder if the tightening sequence isnt quite enough????
worth a try if yours is leaking badly