let's say i just put the head back on my 20r and i want to set the cam timing on the gear without a previous reference point... is the shaft marked? i have heard "markings up" for #1 TDC... but there is the marking on the camshaft (a bored hole) and marking on the gear wheel (about a link off of the other one). or can i find #1 tdc on the cam based on tappet position? does anyone know?

thanks