i purchased a setof factory vent visors 2 months ago. about 3 weeks later, the left rear blew off on the highway somewhere. went back to the dealer and showed him the tape that stayed on the door. he got me another set. removed the remaining three and installed another complete set as the right front was starting to come off. 4 days ago, the left front blew off on the highway !!! again, the adhesive tape was intact on the door. for some unkown reason the visors are notsticking to the tape. has anyone else had this problem ?? the dealer is investigating this now.