An alignment should always be done or checked after ball joint replacements.
Get it done if nothing else to center the steering wheel and give piece of mind.
I could be wrong but it seems like 10 degs. off center steering wheel seems like a lot with just replacing ball joints unless there's some other worn suspension part. Don't know that for sure, never changed joints on a Pat.
Were the hubs also replaced? If so, some after market hubs have issues with ABS sensors/connectors.
I agree with phucker, the ABS sensors would be the first place i'd look.
Make sure the ABS cable connectors are intact on both wheels.
2014 Patriot Latitude 4X4 | 2000 Jeep XJ | 2016 Ford F150 XLT | 2005 Dodge Neon