If you are Do Not Return This Product to the Dealer or Distributor • missing parts, • experiencing installation problems, or • have technical concerns regarding this product, you may contact a Firestone Technical Service Representative at rrtech@fsip.com or at 800-888-0650 (option 1, and then option 2). Representatives are available from 7:30 a.m. – 4:30 p.m. Eastern on Monday – Friday, excluding holidays.