16641641_0_Owner_s_Manual___Escort_Inc___Solution
[Problem] Passport bounces or sags on windshield. [Solution] 
Passport is not making contact with the windshield to provide stability. While holding down Passport's EasyMount button, slide Passport further back toward the windshield so that the back top edge makes firm contact.
Passport 6800 Owner's Manual - Escort Inc.
Solution