The new opener instructions states that if I open the door 3 to 4 feet, it should stay open. My door will stay open if I open it about 3 1/2 feet, so it meets that criteria. But when the door is fully closed, I have to pull pretty hard to get it to start to open, and it only starts to get easier when I've raised it a couple of feet. I put my bathroom scale under the door, and I weigh 35 pounds on one end, 42 pounds in the middle, and 44 pounds on the other end.
does this seem normal? thanks, paul