Adding a dab of oil, as the head gasket instructions state, between the head bolt and washer (or washer and head; forgot which) makes it easier to do the final 90deg torques.
ALSO
Make sure all head bolt holes are free of oil, especially the front two. Blow 'em out or if you have a top sider you can suck 'em free of oil. If not, you'll experience hydrolock and might not be able to fully torque down the bolts.
Good Luck
