Hey forum, Anyone experiencing an accelerating and decelerating thud noise? It's really apparent when from a stopped position, you press the gas and the car lurches forward. It sounds like something is shifting back and then shifting forward. The sound is coming from the back of the car and I made sure that nothing in the truck is causing it. I have eibach lowered springs in. Contacted SC but they wanted to charge me for just looking at it. Any feedback to what this is caused by? I'll try and upload a video of the noise soon.