I'm going to return to nightmare Shadow and Flame in the next few days and try out a new strategy. I'm going to put LoV on Elrond instead of Glorfindel, put in x3 Burning Brand and also load him up with Lembas and even an unexpected courage if possible. I'll also slap most of the defense boost items on him instead of Elrohir. This should hopefully definitely do the trick.... no more beatdowns from Durin's Bane for me...!