I just had my truck aligned after I installed all 4 ball joints and now i notice that the pass. side is sitting a good half inch lower than the drivers the whole length of the truck. I can't remember if it was like this before the alignment, i dont think it was. I think my pass. side rear spring is starting to sag, it noticeably less arch than the driver side, and the overload spring is closer to the stops. Would a sagging rear spring make the front sag too? i know its usually the driver side but this time its not. i wanted to get new rear springs anyway, just wondering if this would possibly correct this? Also I had the shop add a couple degrees of caster to the front to get rid of the wander, they had less on one than the other to compensate for road crown. Would having a different caster adjustment side to side cause the front to sag? I know on my early Bronco if the radius arms aren't clamped to the axle at the same angle it can cause a similar lean (pretty common). Could this be a similar issue? Sorry for the long post just trying to describe it the best I can. If any more info would help let me know and i'll see what I can do.