Keep a can of compressed air handy for when you spill powder on the press.
If you get powder on the shellplate it can cause plate rotation issues or priming issues when, not if, it gets down into the primer slide channel or in/under the shellplate. There is no good place for spilled powder to fall off the press. Use the compressed air to blow it out of the crevices before it causes a problem.
That's no joke. I spilled a bit when I first got my LNL AP.