Late deliveries % issue

Hi all,
At the start of december my orders went crazy, I printed off the AZ invoices through RM’s C&D for their integrated labels function. For those that do this then you’ll know that AZ integration is separate for the EU orders, I have UK,ES,DE and FR enabled.

And so, like a n00b i thought i has cleared my orders by doing a huge print out of invoices to process but i neglected to include the EU orders!! There was about 60 waiting and they went 5 days without being dispatched! My AZ back end was slow to report this until one day (the 6th day) I got red bells and whistles all over the place for late dispatches.

Ok, so i immediately printed and dispatched the lot and my late delivery % was about 45%, a tad over the 4% limit! Over the next few days I processed all orders virtually as they were coming in to avoid anymore late dispatch notices and the % came down very quickly because the orders were flowing in. The EU shops are still hovering around 10% because there are less orders and so the figure isn’t coming down as fast, but my UK % seems to be stuck at 4.18% despite on average 60-80 orders a day coming in and being immediately processed:

Your Late Dispatch Rate is 4.18%; the target is 4%.
4.18%
53 of 1,267 orders
30 days

Can anyone tell me why this isn’t down to zero yet? Despite there being no late dispatches at all?

It’s only time before the EU shops get deactivated i think because the number of orders just aren’t enough to bring it down yet. Is my assumption correct on this?

Thanks all.
Dave - worried!