milkman,
Unfortunately, the list of implements available is incredibly large, so it's not very practical to list ones that won't fit. Worse, implement X from manufacturer Y may not fit at all, but the same implement from manufacturer Y may fit just fine, so even going by type of implement isn't easy. As you look at what's available, you will see ones that will obviously be problems and others that might be problems, and others that probably won't be a problem. After you've had a BX for a while, you get a pretty good feel for what is what. Unfortunately, that doesn't help you much.
It might be possible to enlist other BX owners to contribute a list of the ones they had problems with, but where would we put it? I suppose I could start another thread and see where it gets. If there's enough response, I might be able to stick out on one of my web sites.
Kevin