Heads are off, rotor pointing at number 1, crank at TDC, number 1 piston at TDC, timing mark on crank gear at 12:00...why is the cam gear timing mark at 12:00 and not 6:00????? This was a running 5.9 when taken apart to replace head gaskets. My brother was just checking everything before he pulled the cam out. Help...it's cold out today...