A standard full length sizer undersizes the neck at the top of the ram's stroke; on the way down, the expander ball sizes it from the inside. So you should just feel a squeeze going up (after or with a slight force from popping a primer out). Then a little force releasing the press from its cammed-over position. Then you feel the expander ball.
It sounds like you're just feeling the expander ball doing its thing. Just be sure to lube inside the necks. Or get a bushing die. If you're using a lube pad, push some case mouths into the pad to lube the inside of the neck. For wax, put a little on your fingertip and scrape a case neck across it to gather it up. For aerosol/spray-on, just make sure the brass isn't all facing azz-up.
I tried the Lee case lube when I first started. Hated it. Went to one-shot and stuck with it for a long time. Now I'm using a home-brew that mocks Dillon case lube.