Hi all,
Had the same annoying problem with a Lee resizing die sizing 9 mm, even with a fine adjusted 650.
the very small radius on the mouth of the Lee die don't exept a little tilting of the case.
this does not appear with a Dillon resizing die, as the radius on that die is much bigger, but due this big radius it's not resizing as far down to the extractor die as a Lee die. As the chamber of my 9 mm is very narrow I prefer to use the Lee die, but to prevent blocking the press I modified the resizing die.
Sins this simple modification, witch centers the inside of the case, never had a case hitting the die mouth.