layout problem

[Stef Epardaud]

Hello,

I have the attached drum transcription, and if I remove the last bar
(lines 244-251) it's layed out on 6 lines, otherwise it takes about 10
lines, so the addition of one measure causes the previous measures to
completely change layout, is it normal?

Btw, may I still point out that I have to manually change drums.scm in
order to get new drums because of drum-pitch-names ?

Thanks for any help.
-- 
Stéphane Epardaud