HEY GUYS I HAVE A DELTA 13" THICKNESS PLANER AND I JUST RAN A PIECE OF OAK THROUGH IT AND ON THE SURFACE OF THE WOOD (ABOUT 2-1/2" INTO THE SHAVE) IS PUTTING A "STEP" IN THE SURFACE. IT ALSO IS PUTTING THIS STEP ABOUT 1-1/2" AT THE OPPOSITE END AS WELL. SO GOING IN AND COMING OUT IT LEAVES THIS NOTCH........... WHAT CAUSES THIS? MY INFEED AND OUTFEED TABLE SEEM TO BE LEVEL WITH EACH OTHER. NOW THE STEP IS VERY MINOR BUT NOTICEABLE. WHAT CAUSES THIS AND HOW CAN IT BE FIXED?