Started out last week replacing a leaking power steering line and in the process found that the Tension roller and both Idle rollers had about 2mm of wobble in them!
So this weekend, I replaced all the rollers. If I had I not removed the belt to get at the PS pump and leaking line I would not have noticed the rollers were worn. There was no unusual sound coming from them and under load they all appeared to be running smoothly. But with the belt off I was able to wiggle them back and forth a surprising amount. They appeared to be the original rollers so they had about 106,000 miles on them. I changed the belt a couple years ago and don't recall noticing any wobble at that time. Glad I caught this before anything failed while on the road.