I feel for you man! I spent months trying to figure this out. 2 alignments done, report were perfect. height were checked all corners. tires are new re-11, swap test to rule out tire error, bearings and brakes were inspected and seem normal. don't know what else to do, but I still suspect the brake is slightly sticking because sometimes the car don't roll in neutral as freely as my other cars.
I get so mad when people don't believe me they keep telling me "this is within spec", "your tires are deformed", "the road is tilted", "you are imagining it"....