Heard a clunk sound from my front suspension, on inspection, the drivers sway bar bushing was missing. I had replaced these a few years ago with red coloured Superformance bushings. Never have I seen a new bushing just disappear, must have split and fell apart, no sign of it anywhere. Wierd. All bolts tight, etc. Is this just a fluke failure, or do these things deteriorate that quickly? I have seen worn bushings before, but never one just falling out, especially given how this one mounts with a robust bracket.