The first batch of this that I made last fall tasted VERY close to Zombie Dust in a side by side tasting. So close that I'm sure there will be a bigger difference between batches that I make than there was between my first batch and the real thing. You might consider changing some steps in your process before changing the hop varieties.My buddy and I think that there has to be Mosaic in there.
We too did this recipe and while it came out tasty, it wasnt Zombie Dust.
That or just enjoy a good beer whether it's a clone or not. :fro: