[Kurt B]

I replaced both the top and bottom pieces of the latching mechanism because it popped open over bumps sometimes, but it still didn't help the knocking.

Finally, I went down and got rubber weatherstripping and put it all around the frame where the lid closes down like the trunk is sealed. This prevents any knocking down of the lid. This finally remedied the situation. As to why I couldn't manage it with the stops and adjustments, I have no idea. But it's finally gone, I think!