Door
On our 3055RL the toilet room door would not latch all the time. I found the striker plate was mounted at quite an angle. I removed one mounting screw and turned the plate vertical, filled the old screw hole flush with a matchstick, then reinstalled the screw. I was lucky that the plate wound up spaced properly front to rear on the door frame. The door latches great now. I also had the screen door striker mounted at a bad angle, perhaps someone doesn't know up from down.