I have the pull regardless what lane I am in. I still need to rotate my tires and see if there are any changes to the pull but for now I constantly need to keep left pressure on the steering wheel to keep it going straight down the road.Lower control arms would only change caster - and change it evenly. If the caster is equal both sides longer lower arms will increase it by xx and it will still be equal. If the caster is different, say one side is, say, 5.0 and the other is 4.75 = making a difference of 1/4 degree than when lower arms are installed there will still be 1/4 degree difference, the total for each side will just be higher. It won't change pull because it simply adds the same amount to each side.
Question - is this pull on roads that are totally flat with no road crown and no "tilt" to them?
Here, almost every road has crown for drainage and to force water to run off when snow and ice thaw so it won't refreeze on the road. Very few places where roads are flat or not crowned here.
Mine has a slight right "pull" and I noticed when I'm in the left lane, it's the other way, and when the road is flat - it goes straight.