Just cut mine down.... had a terrible buffeting on my head. tried the shorty shield.. no change... cut over 5 inches off the shorty.... still think it needs a little more. just trying to cut the wind on my chest for long rides. I used an air cutoff tool with a metal cutoff wheel. taped a line and went for it. cut through clean in two passes. polished the edge with air die grinder with 3m scotchbrite resurfacing pad. will post pics soon.