We sent our database to Mackin for collection analysis a couple of weeks ago, so you should be getting access to a new analysis for your library soon. Since we all share one library database, there's nothing you need to do in terms of pulling records - we (Jeffcat, that is) have already taken care of it! All you'll need to do is login to your Mackin account to view your analysis. I believe Mackin sends everyone an e-mail when their analysis is ready.
We are currently on a twice-a-year schedule for sending our database for collection analysis - once in January and once over the summer (June/July).