Cross drilled/ slotted Rotros, DO yours make noise Options

[Jeremy1210]

So I did the rear disc swap 2 years ago. I noticed that I would get some clicking and humming noise from my rear D/S and now my rear p/s tires. i figured that it was my wheel bearings, but I took my car to toyota today and said I think my bearing are bad. well they called back and said it wasn't my bearings; those are fine. They aren't sure whats causing the noise. They suggest that its the rotors cause of the air, but Im not sure. I asked them to make sure everything was in working order incase I did something wrong. According to them everytthing is working correctly and nothing is loose....

So now Im at a loss of what could be the problem... does anyone have any ideas what I Can look for/ check? or if you have extra noise from these rotors let me know. Its kinda annoying and loud and I'd like it to go away.

Thanks for the help