Suppress Blank Space from Matrices if no Data

Do you have blank lines between your vertically aligned matrices?

The best way I have found to resolve this is to "almost" place the matrices on top of one another.
Make all of your matrices one-one thousandth of an inch lower on the report than the previous matrix.

Printing from the ActiveX control in report viewer will no longer be an option, but you can always export to Excel and print from there.