No brake issues at all yet David. You sound like you are getting an unfair share of issues. I hope it improves once this drive train problem is resolved.
BTW I forgot to mention that I too have had an EVSE replaced and my nearest Ampera owner that I am aware of, in Ivybridge (20 milesaway) has also has an EVSE failure and is at this moment borrowing my Leaf EVSE until they get a new Vauxhall one in stock. They said a week. It's been 2 now!