i recently put a new head gasket on the stock d15 motor in my hatch and i was told that i need to set the cam gear at the up position to set the car at top dead center (t.d.c) and i was told to set the bottom at (t.d.c) where and what do i set at the bottom to get both things at (t.d.c) to get the car started and i was also told that i might of bent all the valves in the head