I watch my mechanic adjust the valves yesterday, he adjusted it by turning the camshaft, did this hurt anything? He also used inches (.010 and .030 ) instead of mm ( it was pretty noisy when he was done ), he also adjusted my idle by turning the screw from the injection pump. Did he messed up anything? I drove it for about 20 miles before I went home and adjusted it back to .004" and .012" . Thanks for your help...