Hello there James, welcome to the site
I am new myself too
Firstly, it sounds like you have handled this much better than most people, so don't be too upset with your blood sugars as of now. I don't know much about carbohydrate counting at all, so I can't discuss the ratios with you. However, different meals offer different kinds of carbohydrates, that digest at different times. For example, your breakfast meal may take longer or less time to digest than your other meals, which would explain the different in units needed. It depends on what kinds of things you eat
Also, yes, you should certainly be pleased when you have good bg's. But don't always get annoyed when your readings go either way, because there are so many factors that can influence your bg - stress, fear, excitement, general mood sometimes, etc. In my humble opinion, the bg of any diabetic is in constant flux - it is either heading up, or heading down, because either your insulin is working, or you've had carbohydrate, and at some point you'll need more of either or both in order to sustain your sugar. I used to get annoyed at high sugars, and still do sometimes, but it is much better when you understand why they are happening. There is a book calling "Type 1 diabetes: how to become an expect on your own diabetes" by Dr Ragnar Hanas, and I think you could benefit from it greatly, and you will understand so much more, I'm learning all the time and I've had the condition for years
I hope you can find more answers that what I've offered here