If clean I skip any cleaning at all. But I do recommend the universal decapper as the crud from the primer can be a problem.

If the cases are really tarnished I will wipe them down with never dull or 4/0 steel wool while they are in the spinner for case trimming. I do clean the dies before each use as they seem to attract grit from the shop. The cases I have gotten stuck were from not cleaning or not lubing first.

"When you disarm the people, you commence to offend them and show that you distrust them either through cowardice or lack of confidence, and both of these opinions generate hatred." Niccolo Machiavelli