Jay, Can you share your modelling results for the stacking patterns with the beams being moved in various increments? Perhaps as a Powerpoint slide show or just jpegs on the ArraySolutions web site? Mark KI7WX -- FAQ on WWW: http://www.contesting.com/FAQ/towertalk Submissions: towertalk@contesting.com Administrative requests: towertalk-REQUEST@contesting.com Problems: owner-towertalk@contesting.com