Well I have been working many years to get my first harley and I finally have one. My question is in my owners manual it says if you want to haul a passenger you need to get beefier suspension, but i went ahead a got a 2 up seat and when I took my girl for a ride last night it swayed in the corners! Could this be due to the suspension? Should I get a heavier set of springs, or could something else be causing this? I'm on the iron 883 by the way.