er... check with Sunrise rigging themselves. Are you sure your container's built for a 190?
I have a W13 which is sized for a 170 and would easily take a 150 (if not better than the 170 given how nice and tight it is in there).
With wings the smaller the number the smaller the container - although I see no mention of the W12 anywhere on the sizing charts this would generally seem to indicate that a W12 ought to be smaller... although I don't know the significance of it being a -3:
