Just bought a 93 Legacy wagon, and discovered that although the shocks seem tight enough, when the weight comes off the rear of vehicle (going over railway tracks with a bit of speed or when you jack it up), the bottom spring seat part of the strut rubs against the inside of the wheel well with a nasty scrape. Both sides are similar. Is this a sign of bad strut or top bushing?. I can't see any bad bushings at the bottom suspension arms or anything obviously bent.