when my first switch from 9mm to .40 happened, after I got the press, I had to adjust the slide cam, because after adjusting the height of the camming pin, the .40 cases were still getting hung up in the case feeder tube (the next one out wouldn't always drop to station 1), so after adjusting the slide cam, .40 were fine along with 9mm.
It's not in the book, I took a guess as to why the .40 cases were hanging, and I did everything in the book, and just guessed at adjusting the slide cam and it worked.
Greg