did new head gasket, got cams alligned but which timing mark do i use on the crank? the red mark futher up or the one between the two black marks?

 

there should be a WHITE mark on the crank between two other marks....that mark is TDC

 

ok, and the other one (the one by itself) is for the timing light?? also there is a lot of slack,first i alligned it, tighten and rotated it two rev. and losen and tighten it again, no slack but when i turn on engine and try to correct it with timing gun, too much slack.

 

retension it...there will be some deflection but shouldnt be much