Loose End Cap
If you've noticed that your R1 trainer has developed a noise when riding please check that the plastic end cap covering the bolt that holds the flywheel on the trainer has not come loose. If it has, open up a small gap and apply some Gorilla Glue or similar high-strength adhesive to the underside and the inside edge of the cap in a couple of spots to ensure that it won't come loose. The cap does not need to be removed from the trainer to do this.
Belt Break-in Period
As the trainer belt breaks in during the first few hours of use, a bit of black dust from the belt is normal. Belt noise also usually quiets down a bit as the belt breaks in.