Sorry for the confusion...
With DB I do not! DB, mine anyways, gets bottled and consumed way to fast to be concerned with adding more k-meta. With my kits I will add and stir in an extra 1/4 tsp k-meta just before bottling.
So I have a Chocolate Strawberry wine that I started in August. I added k-meta at the end of fermentation and have also added it at one of the rackings (with the chocolate sediment dropping out, the Jack Keller recipe called for racking every couple months). If this were your wine, would you add more at bottling then?