Beeman 2027/8 sight removal?

I've added a Buck Rail carbine stock on one of my 1208 pistol, and to mount the hand rail the front sight has to be taken off. I had a devil of a time trying to follow the video on removing it with a block of wood and hammer. I tried as hard as I dared and it would not budge. Anyone have a successful method of removing the sight? I did finally cut it off and now need a replacement. Thanks for any suggestions. Charles