A pair of tubular risers {HEAD ~ each} having {TAIL ~ an upper roller} therein at the head end of the frame direct arm cord ends to a cord retraction assembly mounted on the carriage 
having
A pair of tubular risers { HEAD ~ each } having { TAIL ~ an upper roller } therein at the head end of the frame direct arm cord ends to a cord retraction assembly mounted on the carriage
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH