I understand that you should only have to bolus for food and not to try and correct an incorrect basal amount. I am merely doing that as I evidently (usually) require more in the morning than during the rest of the day and evening when my 1:10 ratio works well. A 1:10 ratio sometimes has worked in the morning even. I just looked at some notes from a few months ago and I ate 28g carbs, took just 3u in the morning and only had a small rise from 4.7 to 5.1 by lunch. I know you don't strictly need to correct a 7.2 by the way, but I would prefer to be closer to 5 by lunchtime and not stay at 7+ for hours on end like that. I don't believe it is good in the long run. Maybe I'm wrong but I've read some doctors saying this and it makes sense to me. Non-diabetics aren't at those levels for prolonged periods and as we're using insulin there is no reason for us to either, as far as I can see. Anyway after my 10.3 earlier, I took 6u, ate nothing, and just now was down to 6.2. So as we can see, the insulin is working well when it wants to. I expect this will drop to 4.0 or below so I will account for this when I next eat and dose.