Extending beamed stems

[henrikfr]

I posted a question a while ago but didn't get any feedback, probably because 
nobody understood my question ;)... I'll give it another try:

I want to extend a beamed stem so that it reaches beyond the beam, without 
changeing the position or angle of the beam. I want to do it for cross staff 
notes. I've figured out how to do it for unbeamed notes but can't seem to get 
it to work for beamed notes.

Thanx for any suggestions.

Henrik Frisk
address@hidden
www.henrikfrisk.com