I have also experienced the straps getting loose. I also have the hails and they are on the low settings. I think my problem is how I crank down on my latches. I generally reach around with a couple fingers on the release latch and crank the tighten latch with my thumb, stupidly not knowing this is raising the release latch. Putting some tension on the straps with my boots makes them pop out of the ladder slightly. Im coming from Ride RX bindings where the release latch was different. So, like you, I just had to get used to giving the the release latch a good slap down to make sure it was locked.