hey, a few months ago i installed an Mgw shifter in my 99 cobra. Now when driving it rattles and can be pretty noticeable at times. The more gas i give the car it gets louder. Although when i put my hand on the shift knob the rattling noise goes away. If any one has any ideas on what could be wrong or if its normal, would be greatly appreciated, thanks. (btw i have a hurst ball shifter knob on the MGW)