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Author Message   Hank Tinkerer Username: Hank Post Number: 18 Registered: 07-2011 Rating: N/A Votes: 0 Posted on Thursday, July 21, 2011 - 05:14 pm:    When you put a few drops of optical adhesive on the elements, move each element around to work out any air bubbles. Then make darn sure the elements are perfectly in-line and even before you hit it with the UV