You say you try to eat a good diet. What does this entail?
For diabetics the recommended high carb low fat diet doesn't work. 5-a-day is ok if you understand that for a diabetic MOST of that needs to be green leafy vegetables rather than fruit.
It's very common for long term T1s to have serious weight problems. This is often linked to using a lot of insulin to counter a high carb diet. How much insulin do you use per day?
My husband of over 40 years is a long term T1 and his weight was spiralling out of control, so he cut his carb intake and his insulin use and evverything is coming under control slowly. His HbA1c is also improving.
For an HbA1c to be 7.2%, the overall blood glucose average is 10. So if you are seeing 5s and 6s during the day, your nighttime levels must be in the teens. Several of the symptoms you describe could well be down to carrying , what would be, about double average weight for an average height man.
I too would recommend "Dr. Richard Bernstein's Diabetes Solution". You may find this book in the local library, but I know ours didn't have it last time I asked. It's American, so you can get it easily on Amazon.
Hana