I'm surprised no one mentioned the worn spring issue. When the springs are fresh, the flap will stay upright when you lay the handcart down and pull the flap up. But once those springs wear out, it always falls down.
Anyway I agree with every single gripe. For the preloaders who put the handcart in the cab and then leave no space to secure it I always let them know to leave it secured and load around it. I can't stand not having it secured and it banging against the bulk head door every time I come to a stop.
Also can't stand flat tires and folks who try to steal it. I marked mine with about 20 stickers all from different businesses on my route so it stands out like a mother. I remember one morning when I discovered it missing. And I remember the satisfaction I felt as I walked the entire line and discovered it 10 cars down. Pulled it out right in front of the driver like 'this is mine, homie!'. Lol.