Hey KLX guys.
Re: the KDX snorkel, tearing the snorkel (and airbox lid) completely off is one of the well-known cheap/free mods that KDX riders do to uncork their bikes. I'm sure there are lots of free KDX snorkels laying around in garages. If you know any late model KDX riders, see if they'll give you theirs.
I might have one laying around in my garage. If so, it's free to anyone who wants to pay postage.