I have some old 8mm films from the 50s and 60s that I want to view, but a couple of them, the sprocket holes are facing the wrong on the reel.  Is there an easy way to turn them over without them ending up a tangled heap on the floor? The reel is meant to go on the projector with the film hanging off clockwise, currently it would be anti clockwise. Changing the pulley on the projector is not an option