Now that is not a problem anymore.
The two baskets on the left are set up to slide, and actually can be removed completely off their tracks if need be.
The basket on the right could slide if it had the room, but it doesn't, so I just put it back in the corner so I could put stuff in it to keep the stuff "contained".
If I wanted to, I could get a smaller "stackable" half-basket to place on top of it, they sell them at the store where I bought these.
Here's the same large roomy cabinet, but the left door. I just placed the 4th sliding basket I had, horizontally in front of the door. It also doesn't have any room to slide, but it fit perfect in that place even though the wheel well was right behind it. Nothing could be easily stacked in that area. The basket helps contain items, and also it's easier now to to stack stuff on top of the wheel well (where the bucket is sitting). It's just all around much better.
Wall to Wall Carpet!
We had tons of berber left over when we did our carpet 2 years ago. Ooo lala!
I even made two "mats"
One for outside & one for just inside the door.