With my bag, the problem is to get it into the bin. Once inside, all good. But the opening is a bit smaller than the bin height. So, if my bag is really stuffed to the max, I have to push it quite hard to overcome the „resistance“. Which I prefer not to and just choose delivery at the aircraft. Which is a great option unless you have to wait for your bag in pouring rain at 2 degrees and mean winds… which happened a few times over the years