Unfortunately, I got the Radius used without the warranty card. It works fine on the lower drag settings, but it gets very grabby and rough when you crank it up for bones.
Never heard of Sea Level reels before. Their website indicates that the Tempest was originally sold by Albright. I heard that the Albright reels (and the Redington CD) were actually made by Okuma. So, what makes the Sea Level Tempest a better choice than an Albright or Redington?