I have a quick and easy fix for this http://www.google.co.uk/url?sa=t&rct=j&q=how%20to%20avoid%20jip%20in%20halo%204&source=web&cd=1&cad=rja&ved=0CDgQtwIwAA&url=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DMFB5SlKAqIE&ei=6-lmUfLJKK3Y0QXIo4CgBw&usg=AFQjCNHLQ3FzUngvAg1YyMkMBlqAFCFX4Q&bvm=bv.45107431,d.d2k