Whew, my kingdom for a little formatting!
Is this correct:
xcamber = 0.2 with more on the Right
xcaster = 0.5 with more on the Left?
I expect the xcamber to give a bit of LEFT pull and the xcaster to give a large amount of RIGHT pull, for a net right pull.
However, different vehicle suspension geometries will have different behaviors, so it's difficult to be quantitative. I am quite sure the signs are correct, and that your xcaster is a problem (with no simple solution). This assumes that we've ruled out tire problems - which you can confirm by putting different tires on different sides of the front positions. You already have said you did two different arrangements & the pull was not changed (I presume your comment about better steering is something other than the pull problem.) One other comment, our vehicles, with my 17" Michelin tires anyway, has quite a bit of variation in pull depending on what the road crown is (which varyies all over the place, at least where we have winters that push the pavement all over). Not muchof a problem if one has both hands on the wheel, but I find it a bit annoying sometimes. This isn't unique to our vehicles.
I also, on some occasions, get a severe pull upon mild braking. Others on the forum have apparently not experienced much of this, so I'm curious. I wonder, just speculation, if it is dependent on if there are ruts in the pavement - maybe from where heavy trucks have left their impression. When it pulls on braking I'm gonna try to make note of non-flat pavement.
If anyone else experiences this, please post.