vertical spacing issue

[Helge Kruse]

Hello,

I think, vertical spacing issues have been discussed often here. But 
even playing around with VerticalAxisGroup doesn't get my score in an 
acceptible design.

The demerit is that the staves are pinned together while the dynamics 
line gets huge space. Can you get me a hint, what I have to tweak to 
control the spacing -- and probably same important where I have to add 
the tweaks?

The complete score is at http://dj1na.gmxhome.de/score/LR3.ly

Best regards,
Helge