Hi to both of you. My feet screw on from right to left. I measured the height to determine it was low shank. I found the manual on the ISMACS.net website. What the manual and instructions call a rear cover plate fits under the rear spool mount and provides two holes that line the thread up for winding. I actually found a you tube video showing how to wind the thread on my machine. That was the only way I figured out what was missing. It is part number 796.