Alright guys an gals, hopefully y'all can help me with this issue I'm having. This past summer I put a new lift in my jeep and since then when I take off from a standstill or if I accelerate while driving there's a thumping noise coming from the floorboard in the trans hump area near my feet. You can feel it and hear it. I can't seem to figure out what's causing it. Any suggestions or similar problems? Hopefully y'all have somthing, because it's driving me nuts.