horizontal beams

[ljc]

i'm using \override Beam #'damping = #+inf.0 to get horizontal beams  
(the only hack i know and that i could find to get horizontal beams).  
but more or less randomly some groups of notes are rendered with some  
slant. i haven been able to pin down when or why this happens, but  
below is an example, with images:


\version "2.13.44"


\relative c''  {
   \override Beam #'damping = #+inf.0
    f16 g a b    a c d g,    a b a c   d e f g,
    f16 g a b    a c d g,    a b a c   d e f g,
    f16 g a b    a c d g,    a b a c   d e f g,
    f16 g a b    a c d g,    a b a c   d e f g,
}

hb.jpg
Description: JPEG image

hb2.jpg
Description: JPEG image