My personal recommendation: Blue Magic Metal Polish Cream
How is this bridging accomplished?I had a QX-949 for a while. It was ugly (or so I thought), but bridged to stereo, it sounded awesome. Quad receivers and amps bridged back to stereo are one of audio's sleepers.
I usually wipe the mud off with my hand, then carefully pick the gravel out, paying particular attention to any gravel/grit near my eyes.
Oops, sorry, thought you said faceplant. Never mind.