vertical position of secondary beams

[Urs Liska]

Hi list,

sorry to ask something which could be looked up in the docs. But I've 
struggled so far to achieve the attached result and can't seem to get my 
mind clear anymore to find the solution :-(

All non-standard stuff is just as I want it except one:
The secondary beam at the last (the smaller) bes should be closer to the 
main beam in order _not_ to clash with the thicker beam.

So which grob and which property do I have to override to move that beamlet?

TIA
Urs

schoenberg-2.png
Description: PNG image