Our '05 Tahoe has 170K on it. Its 2wd and is in awesome condition. Back in January I decided to update the suspension because it was starting to feel a bit bouncy and unpredictable so I did the Bilstein ZW7 kit which replaces the front and rear shocks and also replaces the rear springs with a stiffer one than OE since we were removing the nivomat shocks (which were pretty well blown). Since that time we've noticed the rear end now sits just a little lower than it did with the Nivomat shocks and OE springs. The truck feels great, but this tiny bit of sag is bothering me because I can see it as she sits and it wasn't supposed to do this. Its not a lot, but I first noticed it because we hooked our little trailer which I've owned since 2010 and when we reached our destination I noticed one of the chains had been dragging during the drive. Pulled this trailer hundreds of time and never had that happen. Anyone else use this kit and experience the same?