Good Afternoon All, I am the "admiral" of a Carver 444 - which has a sliding glass door and screen leading from the master to the cockpit. Against the captain's advice - I adopted a dog (Little Darl'n) with separation issues... So NOW the captain needs to replace the screen .... yeah he is not happy with me or the dog at this moment. Problem is - the captain can't pop the screen door off it's track. It will not lift up and out. He does not see a tension screw or lever which will reduce the tension on the rollers. Help will be greatly appreciated by "little darl'n" and may rescue me from having to walk the plank...... My thanks to all.......