So irritating! My fear is that they really didn’t fix the controller and are just sort of dodging the whole issue.
The grainfather website specifically asks folks to contact the distributor first before contacting Grainfather directly. I don't think they're dodging at all - everyone that's contacted the distributors in the US has gotten a full replacement from what I've seen in the 20+ cases. Heck, they don't even ask for the old one back which I think is amazing. I think it's pretty safe to say they are taking it in the shorts to replace all these units, but at least they're standing behind their product.