I recently installed E30 M3 springs with bilstein sports on my 1991 325i sedan and I noticed the front passenger side was 1/4 inch higher/ bigger gap than the drivers side. Did I install the passenger's side spring upside down? Or is this normal? I was pretty sure I was on a flat road when I checked as well. Or maybe something with the struts? The collar nut that screws into the strut housing comes loose on the passenger side after a few days, but I tightened it real tight today and its still higher. Its not completely noticeable, but it bugs me alot and I want to even it out. Any ideas??