Black RTV should work - but would possibly buying some rubber bumpers (peel and stick) work also? I've no rattles - yet! (But popping those rings and tunnels out sure is an easier way of cleaning the polycarb/acrylic over the gauges!)
You got off easy. It was about 10 months before I figured that out! :lol:Where were you when I needed you? It took me about six months of owning the car to figure that out.