In view of their suspicion of an under-rated D1, and GE's assertion that their surge suppression is equivalent to their competitors, it's hard to make these fit the data. Specifically that the problem only seems to affect the LEAF-Wattstation combination. Not Wattstation-Other and not LEAF-Other.
Or, maybe there just aren't enough data points yet. In any case, while I'm sorry for those affected, it will be interesting to finally learn the actual mechanism at play.
I noticed you're still working with polymers.