Issue: The issue identified involved the bottom brackets, including those fitted with the bottom 3-inch rollers. These parts displayed severe rust buildup. The rust was so extensive that it covered most of the surface area, making the components appear corroded and worn out. In many cases, the rust had penetrated deeply into the metal, weakening the structural integrity of the brackets. This level of corrosion can cause serious problems, especially when these parts face constant use or heavy loads.