It was missing some parts when I got it such as the Y axis bearing cap. I now have it finished besides the head. Now when I move the table toward me in the Y axis the table make a grinding sound. When I move the table away the sound goes away and the table is easier to move . Did I forget some parts? The bearing cap came with some washers but i didn't use them because the drawings that i have do not show any spacers or washers. The X axis moves very smooth but I do hear the dials rubbing against the bearing caps is this normal?