I've never seen anything quite like this. I just installed some DR Long Neck taperwounds, 30-125, on my Cort Curbow 6 string. I've had to raise the action WAY up... I've got it set pretty high and I'm still getting an unacceptable level of fretbuzz. I had been using DR Lo-Riders before, and had the action set really low, it was very nice... I'm not terribly thrilled with having to raise the action way up. I'm also getting an odd warbling sound in the higher register, it sounds kind of like a chorus effect... I have no clue what's causing this. Are all taperwounds like this?