As far as the EPA, I always run max steering left and right, as maximum as the car allows to... I don't see why you would have to have left and right equal.... maximum steering is what you want, just in case you need it to resque your car from a crash....
Just to be clear Martin ... this is bshit
Following what you do is driving with a different steering curve between left and right, that is bad.
Just a tip: Trim your servo in 0-degrees looking at your servo-saver (allign front with front shaft). Then adjust your toe-out setting so right and left are equal.
Finally adjust your end point to equal left and right
Good luck!