I built a mob farm, and the collection basin looks like this:
Usually, I have the minecart running around and collecting the items that fall. The items are then collected by the hoppers under the track (they are kinda hard to see). However, I've noticed that the cart is being stopped right in its tracks. After looking there for a while, I discovered that a mob falls and happens to be right in front of the cart, and stops it! Is there any way I can prevent this? Maybe using a chest minecart instead of a hopper minecart?