i have in fact i even checked the tension on all of the valve springs that was all within spec. all of the valves appear to be opening and closing with no problem, there is no chatter in the valves while running. i have not checked them with a dial gauge but they all appear to be moving the distance. at least no visible differences. i have checked the vacuum at the intake and at idle it fluctuates rapidly between about 12 and 20 as soon as you give it some throttle it settles out and holds at around 18 as long as you are giving it some throttle.