All the "U-Reely's" I had all had the locking pin that hit the handle , The early ones were a retro-fit. I had a Jetco Mooney Mite that I tried to fly on a 100 ft lines but discovered that when the lines were all out one got shorter or longer & caused instant re-kitting. Those hold your plane by the wing tip & let out the lines was always good for a laugh with new guys, either got dizzy & fell over or pulled the bell crank out through the wing . Good memories? MAX H.