Hi I am building an FN 30 and would like to remove the barrel shroud. I heated it up with an oxy-acetalene torch and tapped on it with an aluminum punch so I would not leave hammer marks I had an 18" bar through the ventalation holes but couldnt budge it. It is now soaking in a thin oil overnight, anyone with some ideas as I dont want to damage anything. The barrel shroud is put on backwards as the hole for the fixing screw is at the booster end. Thanks Al