Recently did some clean-up & tune-up of my Ridgid 6-inch jointer. Used it for the first time to face joint and edge joint. The face joint was a very rough ride though the surface looked smooth -- no washboard or snipe. Edge joint ride was smoother, also with a decent finish and no snipe. My thoughts are that one of the blades is higher than the other two. Am I on the right track? Thanks for your input.