sw composer callouts: shadow/border issue

solidworks composer I am new at Solidworks Composer. 

In SW Composer, I want to make callouts looking exactly the way they looked in Adobe Illustrator. However, when I try to give the attach line a white shadow, either also the callout label gets a white shadow within the callout label, and/or gives tiny spikes at the outside of the label.

In the attached images: the one where three callouts at once can be seen (there in a screenshot from Adobe Illustrator): the middle callout (the biggest one) is the one made with Adobe Illustrator, the other two there are the ones as they come out of SW Composer.