Troublesome BC7

Though BC7 SUBARU Legacy LSi US model goes straight on the flat surface as so adjusted step by step procedure, I feel something strange in her reaction especially on rear axle, some unacceptable twisting movement remains after bounding, lack of upper arm fundamental designing invite this phenomena, so it's innate one?
Anyway re-measurement in axle constructive geometry and wheel alignment would be performed, such kind of time is now after several adjustment experimental trials.

Basically, left side tendency remains unpleasantly, so wheel base comparison would be the first step for corrections, for tomorrow. "Set back" in front or "Swung rear end" or both of them should be the reason of some different wheel bases. Remember here, the centric steering position while straight running cannot be always regarded as a reliable neutral and standard position.
Because the "Self-Steer" effect would adjust the the centric steering position at the most adequate position compensating the thrust error automatically. In another words, thrust angle does affect on the steering centric position automatically. So, the steering centric position while straight running cannot be always reliable as a permanent Null position, because it drifts because of the upper reason.

Also some periodical mechanical noise being tuned to the wheel rotation probably from frontal right brake calliper portion must be checked enough not to have any anxiety while driving. Braking effect while turning remains probably because of discrepant TOOT gradation, lack of smoothness by bad proportioning ratio, fundamentally the criminal is reduced body height brought by applying GC8 GDB shorter springs. More consideration is necessary on this point, the original spring setting is one of a choice with harder shock absorbers.