when setting up a servo.......
 

when setting up a servo what do u set up the streering epa at first.....

Your EPA wont matter when first setting it up, just get the steering position centered on the radio, and as close to centered as you can get with the horn. Turn your dual rate up to 100% and set your EPA as far as you want them to go. I dont think I've had a car where I could go 75-75 or whatever on the EPA, always like 60-75 for right and left (just examples) so set it to what you want by eyeball. Then all youll have to do is turn your dual rate up or down if you want more or less steering throw.