Default [Q] Venomous VX/Safestrapped GS4 with storage issue

I've been having an issue installing the most recent Google Services update due to insufficient internal storage space. When I tried to clean it out I noticed that I could only see about 2 GB of what was on the disk.
I looked around online and saw that the issue might stem from backups created when I installed the custom rom but none of the threads covered how to fix it using safestrap.
Any help would be appreciated!