Don't get discouraged if it doesn't seem to be working. Practice will strengthen the voice and the inflection will only be perfected after the first flight.
+++++++++++++++++++++++ Not too much gusto during the early sessions or you might have to change your shorts for real - you must give the sphincter time to develop staying power. Larry - your comment about the pucker /wrinkles /grin was the funniest in a long while - had me chuckling for hours. Steve J