Hi
What's the version of your Office?
Let's say it is Word 2010. Go to Review>Tracking>Track changes options>Balloons>Preferred width
Remember to change Paper oritention in Printing
to Preserve.
In Word 2013, to find Tracking changes options you have to click the dialog launcher (the little arrow button in the bottom right corner of the Tracking group), and then click the Advanced Options button in the useless intermediate dialog
box.
Regards
Tylor Wang
TechNet Community Support
