2oo0 s type 4 liter dohc w/var timing .1 of the plastic chain tensioners broke and snapped the secondary timing chain ,bending 2 ex valves. In my haste to replace valves i took off timing chains and lost my timing.i know about the the cams ,flats on top and clamping bar across the 2 flats.where do i pos crank?.one manual says pos #1 cyl tdc ,another says pos #1 cyl tdc and rotate crank 45 degrees ,keyway should be at 6 oclock pos.both manuals say to insert special bolt into crank sensor hole and lock flywheel.i am totally confused.i dont want to bend any more valves and have to take heads off again.please help