Ensure these two steps are followed for proper Gutterglove Pro installation:
Saw a blade’s width, 5/8-inch-deep groove, 1 inch from the back side of a 2 by 6 lumber board. Place the board on a flat surface and insert the piece of Gutterglove Pro into the groove. Bend the piece of Gutterglove Pro downwards by pulling it toward you until you get the desired angle along the front edge.