Wow, he dropped almost a 100 points in 5 hours.
I have started a new pen, I don't know if the old one was 28 days old, but it was nearing the end of its life. It doesn't take long to burn a pen at 6u twice a day like I used to dose so I never worried about how old the pen was. Now I need to make note of new pens.
Now that I do the math, and taking into account I did not dose at all for 4 days and then dropped to 2u, the pen was probably past the 28 days!
I think that was the issue, think I should back down to 2???