Is there a limit on the number of cells calculated based on the starter size? For example: The yeast starter tab recommends a 2.28 liter starter, but when I input a 2.5 liter starter the cells calculated value (107.2 Billion) is less than the cells required (221.8 Billion), if I change the volume to 3 liter, the cells calculated value does not change even when I check/uncheck the stir plate box (to refresh calculation). The yeast package date is approximately 6 months older than the brew date and I have checked to make sure these values are being used.