I did this after the 24 hour break in. Have done it twice already each time giving it another adjustment period. No go.
I soaked them as soon as I got them home. This is when we heard a difference between the two and figured it needed a break in period. Hubby, Mr. tinkerer, took them apart, cleaned them, put them back together. One was running faster after his cleaning. The other ran a little faster, but the noise has not gone away. I'm thinking maybe something happened to one of them and maybe that's why the guy sold them? I dunno. Stinking thinking, I know.