I'm baffled, measured and replaced valve shims accordingly using Fred's DVDs, put camshafts back in with EX cam marks at 3:00, Intake at 9:00, Crank at 4:1 and tried to measure new gaps and for instance on #4 there is not gap in intakes but gap on exhaust, Gap is good if I rotate intake cam to a non lobe position and gaps are good......... I don't understand!! See pictures and thanks in advance! 2011 Model year