I looked a little more into this issue and have found the Springfield extractor to have a bevel.
On page one of this thread
a person asserts the Mauser bevel condition and later on page 2
confirms that is not the case.
On page 6
it shows mechanical drawings of the extractor with the bevel.
poster of that thread, was using an extractor that wasn't to specification, he later noticed his extractor didn't have a hole in it like shown in the drawings, as is with mine.
I would look into the notion that your extractor isn't according to specs.
On a side note: Reading that thread; I found out that my magazine follower is for a 1917... I think. It looks exactly like the one in my M1917 Eddystone.