About 1K miles ago had Jimmy in for rotate and alignment @ 98K. Tech said idler arm was worn enough to need replaced right away, so had that done. This weekend went on 400 mi trip. Noticed single "clunk" sound from front end (more heard than felt) several (maybe
3) times while backing up (and maybe turning wheel slight left)(not every time). Only mention by Tech re front drive was a slight leak from left side axle seal on diff. Enough to make diff wet, not enough to leave spot in drive. After 2nd clunk, I did take a quick look at steering, diff, axles etc. Nothing obvious. Is this clunk symptom at all common ?? Known cause ?? What to look for ??TIA, Reed