I have got one of these laser branded outhaul sleeve things that go around the boom and is supposed to slide back and forth. The problem is, it doesnt even tho its sprayed with silicone every time! In fact it is a complete piece of s**t and jams constantly! Anybody had any experience of these things? I am just about to throw it in the bin and buy a rooster downhaul strap or similar for a fraction of the price. Any advice welcome. R.