cshaw
10+ year member
free the robots
adding weight and deadener will help. my hatch door did the same with low freq. added 2 layers of deadener and hatch doest make much noise and added weight so it doest flex as much. it really helps. add the most weight you can to that hatch door. plus think of the wasted energy and pressure that it takes to move that door. it could be used to make more pressure ie louder.