marginal note

[Wolfgang Engelmann]

I am using marginal notes and have the following problem:
The notes are partly rather long, and on the normal margin they take too much 
space. Therefore I incraese the inner margin by 
document layout > paper > margins > custom size > outer 8 cm
The margin is now wide enough, however the margin note does not use it, but is 
still set in a small scale. 
A lyx problem or a latex problem? What to do?
Thanks again for a hint
Wolfgang