I would not know if my detents could wear out because first thing I did was remove every drawer and bend the ends of the slides straight. I did not like how the drawer would grab and make it harder to open. Nothing wrong with the function really, I just have no plans to move the box around my garage. Also, I took the wheels off and set the box on half inch plywood to keep it off the concrete. I have my work bench built over the top of the box. So, as for your concerns, I really can't help here but the box is great. I'm jealous of the the guys with the nice Snap-on boxes...you CAN tell the difference but for a home box like mine is I'm more afraid of having to move it one day than I am about it breaking down. I know others that have one and feel the same about the quality. Better than Craftsman, as good as many, not a nice as the best but overall a very good buy and I would buy another if I needed more space. (I have another box too of a different brand)