@annette in my defence of rapid rises, I effectively had 110 grams of carbs and NO insulin – I had to wait to see if I had absorbed any before I felt safe giving myself more. Numbers get too complicated using guesswork 
The vial in my kit is my “live” vial, next time I need to change set I’ll use that one. 6 days time and I’ll have used the last of it so I’ll put a new vial in