Timing chain recommendation

I dont use that method, I put my finger over #1 plug hole, socket on crank bolt, rotate clockwise until you feel slight pressure(air)on finger. This is now compression. Put in piston stop in #1 cyl. Rotate slowly until tdc/piston stop has "peaked". Make a mark on harmonic balancer at "0" mark. Now leave everything as is and rotate counterclockwise. Until tdc/piston stop has "peaked" again. Mark the balancer at "0" mark. If you split the distance between these 2 marks, you now have TRUE tdc. Hope that helps.