I am very pleased with the cover. Most of the time, it is easy to turn the lock/knob on the back above the tailgate (not fully open the cover, just disengage the locking bars underneath) and the power tailgate works flawlessly both open and close. It has been raining the past 3 days where I live, absolutely zero water in the bed each day I check it. In fact, I just ran outside and using the key fob I was able to open and close the tailgate w/o touching the DB cover. Still no water inside. Maybe the water around the seal is lubricating it enough for the tailgate to slide open and closed. I think there is enough adjustment in setting up the cover to allow the seal to be both water tight + flexible for the power tailgate. Make sure to put weight on the cover when you are tightening the bracket for the locking rods inside/under the cover. that will compress the seal so there are no gaps.