What could cause this? I'm not really sure if it started after lowering or not. Only happens when moving from a stop. It's not a vibration I feel in the car really, but when I have my hand on the shifter I can feel the 'wobble' of it in my hand. It's pretty mild, not violent at all, and it's gone as quick as it comes; 2k rpm it's here, 2100 rpm it's gone. It doesn't do it at any kind of speed either, only when moving from a stop. Any ideas?