Only 3 springs? That's crazy... and they are supposed to be an authorized installer? I am getting Eibach springs installed in the next few weeks... if I decide not to attempt it myself... I will be sure to double check the installer for all 4 springs to be in place. I would definitly punt too... who knows what they might do next when you go in there expecting them to do re-work for free...eventhough its their fault in the first place.