Hi Guys I cannot view what the marks on my timing cover tab are for, not sure if there was a decal or if old mate corrosion was here.I am trying to check my valve settings as the engine was rebuilt 25hrs ago.There is 5 "teeth" on the cover tab and can someone advise if the centre is TDC when aligned with the grove in the balancer pully? I photo or drawing would be very much appreciated.This engine is a V6 chevy 262 late 1980,s.Thanks