All spring/shackle hangers are exact distance. All square and parallel. All new springs and shackles, hangers, etc. after a ten mile road test we get this mess. Trying to identify what is up. Had 4 wheel alignment for measurements and everything checks out. Side to side, front back, center pin to center pin. It’s as if rear axle is canted but it’s not. Take a look. Ideas? We are stumped. Tempted to outboard upper hanger but then distances will be off. All parts brand new.