Pre-hing door issues

[Gregory Massi]

Hey Everyone

I am fairly new to carpentry and having an issue hanging pre hung doors. For some reason I can't get the hinge side gap and the strike side gap to be consistent with each other. Individually each side is consistent but the strike side gap is roughly an 1/8 inch bigger than the hinge side gap. Do you guys have any suggestions? I made sure the hinge side was plumb prior to fastening so I am not really sure what is going wrong.