I have a .35 Whelen HR, I have had some problems with the ejector not removing the case, I took a good look at the ejector in place against the case, the profile of the ejector was not shaped so as to enter the extraction grove, the shape was square, not straight up and down on the hammer side and sloped on the barrel side , but square on both sides.
I carefully filed the ejector to match the profile of the extractor groove in the case and have had no more problems with it.
Don