I started pumping with an A1c of 6.3%. It was 6.4% after six months on the pump. Now it's been 13 months pumping.
Of course, if the 530G system is responsible for the rise in A1c (and it might not be) I think the sensors are more to blame than the pump.
I wore a sof-sensor from Sunday to this morning along with my Enlite. Because they disagreed so vehemently most of the time, I checked my blood sugar much more often. They were both very far from the meter. Nonetheless, with the Guardian returned to the study, I once again pretend the 530G is telling me truths.