Both accessory belts on the Miata have been replaced within the past year. Recently when starting the car at night, the belt(s) squealed badly under full lock when turning out of a driveway. Then a couple of times this past week, the belt squealed during a cold start, the second time it did it even longer (about 30 seconds) until I raised the RPMs and pulled away. Do I have a bad idler pully that isn't spinning freely? Both belts are new and look great And this has happened only during warm, dry weather, during "cold" starts. If i shut the car down and start it up again a few minutes later, no squeal.