Just checked my balloons in Mayors had 390 to donate , it changed to 414 which I donated but the additional 24 is only one of the production lines all are in sync timewise and all buffed 100% so I am down 48 per hour.
Update: I have taken screenshots but within the next hour there was a disparity of approx 25 mins between production line 2 and 3. They were in sync as I never have run less than 3.