You really shouldn't need to be running such large differences in EPA. EPA should be used as a last resort, not as a default means to set-up your steering.
Try the following;
First off, set you radio to equal steering each side, and remove any curve etc (you can put this back in later)
Set you toe links to equal length, and then mount them on the car. Ignore if you have extreme toe-in or out, you'll reset it later.
Now on you need to position the servo horn such that when the steering is in neutral, the drag link (link between the horn and assembly) is forming a 90deg angle. Given the height of the horn and steering assembly, this will require the horn to be off centre. Now this is not a problem, in fact it's a good thing, as the 90deg angle will ensure equal servo throw side to side.
Then set the drag link to the length needed to get equall amounts of toe either side (rembering the equal toe links from the previous step). When straight, then adjust the toe links equal amounts to the desired toe setting.
This way, you'll get equal steering throw side to side, with the car tracking straight. The only thing you might have to adjust is the sub-trim to get the servo horn in the right place, but take your time, and once you've done it a few times, it's very easy to adjust quickly.
Oh, and I would move that ball joint the otherside of the horn, as that much angle on the link isn't good