I've tried it on a couple of occasions now and I'm convinced it is a fault rather than something in the flavour profile (whatever that means).
Bar Items: I think there are notes on the bottle but they are just standard blurb (I forget to be honest and do not have the bottle to hand).
I've had a couple of other whiskies with the same thing - an Old Pulteney 17 Year Old (at a Jim Murray whisky tasting) and a Cadenhead's bottling.
Jim spotted the flawed Pulteney on the nose, but we were all shrugging our shoulders until we tasted it and were left with a really bitter residue on the tongue that spoilt the next whisky. Weird thing was not everyone hated it and I wonder if it is one of those flavours that only effect some people.
The Balvenie I have is nothing like as bad as that Old Pulteney - the nose and palate are lovely, but it gets its own back after it has gone down your throat. It immediately made me think of the JM tasting.
I might try vatting it with something peaty - that's not a bad idea.
It's not put me off Balvenie in general, but I wont buy another SB offering unless someone has written notes for it first.
Funny thing is I'm tempted to buy a bottle of the 10yo today to set things straight