I use a QT and call it a day. You really think there's any difference between 32OZ and 38OZ. Not one that your clutch and chain will notice! 
Hoist! 
38 oz
- 32 oz
6 oz
However, if you drained it on the jiffy stand or are starting with a dry primary, it becomes:
45 oz
- 32 oz
13 oz
Now you're nearly a pint low. And yes, at that point it does make a difference.
What's so tough about filling until the oil just touches the bottom of the clutch spring? Now that there isn't an inspection cover anymore, you have to pull the clutch (derby) cover anyway to fill the primary, and the clutch spring is sitting right there. Sit the bike up level, fill until the oil just touches the bottom edge of the spring, and button it all back up. Then it will be right no matter if you managed to drain all the old oil, half the old oil, or some other variation. Before you start the oil change, just make sure you have at least 1.5 quarts of fluid on hand instead of the 1.0 quart of the older models.
I can't believe it takes two pages to tell someone how to fill the primary. As another member is fond of saying, "it ain't rocket science".

Jerry