| Penny,
The sore knee is probably aggravating the situation. Pain can increase levels of stress hormones, which pushes blood sugars up. So get your knee sorted before change anything else. And as Deus suggests, back off on the exercise for a while.
A lot of the glucose your tests reflect, in spite of restricting carb intake, is probably being produced by your liver. You might want to try using Metformin together with your insulin to stop this. Metformin reduces the production of glucose by the liver and has worked really well for me.
Cheers,
Mark | 
