Changing ova file

We are attempting to load the ova trial version. We are using the ovf tool to attempt to make changes to the ovf files to make the 16gb / partition up to 80gb. The change is allowed, but since there is a line above that entry for the vmdk file and that file is set at 16gb, the change is allowed and the repackaged ova file works. But, I end up with the 16gb / that I was trying to avoid. I don’t have root access so I am not sure if that is known to people or not as well.