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figs. 23, 24 illustrate optional but preferred fly bar 77 held by and between brackets 78 which are secured to the edges of tray 79 that in turn is secured to vertical base 65.
preferably a fly bar 77 is held by and between brackets 78 which are secured to the edges of tray 79 that in turn is secured to the vertical base 65, as is shown in figures 23 and 24.