Have a pair of poly carb progressives that were digitally surfaced on new Gerber Coburn equipment. After edging for the frame, I dyed them to a solid gray three using BPI tint. The lenses end up with a round circle in the center that is darker than the rest of the lens. Looks like the place the lens is held for processing. Surfaced a new pair, same thing. Have surfaced and finished a third pair but afraid to dye them. Any thoughts? Suggestions?
Mike