Dzus Spacing

["John Burk" <joyseydevil@comcast.net>]

I'm doing the body on my streamliner - The .062" aluminum panels from the
driver to the tail are 21" tall ,  96" long , flat verticaly and are gently
curved front to rear - My question , is 13" between Dzus buttons ok or should
it be half that so the panels don't bulge at high speed .