So 2 months on smart guard, on the whole very pleased yes I have had all the normal problems lows a few highs some I have to say my fault but I quickly learned to let the pump do it's thing my nights are great I can sleep all night without looking ok I do sometimes still look but I don't feel I need to, I have had infusion set problems for years where it takes a little while for the insulin to start working so the 7 day infusion sets help. So my only advice is let the pump do it's thing although I know a lot of us who have been on the 640 like to fiddle with it but the 780 is a whole new and better pump I tend to now leave it to do it's thing