Gerald, thank you for the admonition but I assure you that I know what I am doing and have done this to many zooms in the past. And...I can get the whole thing put together as clean, or cleaner (!) than the 'clean room' used by manufacturers. I simply need the formula.

IC-RACER you just might have caused my heart to 'race' a bit faster. For this I thank you profoundly. - David Lyga