Yeah, I can definitely see how they could.  Ever since my crappy evods I learned to wait until I heard the crackling.  Sounds like Dave's 5/64''ID 6wrap @ 0.21ohms might be a good coil to try out though.  I've been wanting to rebuild my Vulcan for a while now and I'm gonna give it a shot, once I feel less lazy.  Generally the coils I recommended are too cool for the Vulcan, which is more or less a Tobh.