| I have a similar numbness in the toes and after walking for exercise I have a tingly feeling in the feet. My numbers are a lot higher than yours but not awful compared to many. So I don't know if something I was doing for a long time before I knew about this or maybe its poor circulation as my hands and feet are very cold in cold weather.
I can relate to the heavy carb usage, but I don't know if its a factor or not. All my relatives ate about the same as me but none of them are diabetic either? But I sure liked my coffee cakes and other high carb items.
As others have said, cutting down can't be all bad, although I also have lost considerable weight and you don't sound as though you can much afford to loose much. | 
