Do you ever have problems when you change out, with the new sets?It seems the past few times, including a few times in the past, that my first day I spend in the 400s. It's horrible!!! I willmove to other spots, use/waste new sets, & even waste insulin & open a new vial out of desperation to get my pump to work as itshould. Then, all of us sudden it seems to kick in. This happened yesterd…