Hi and welcome to the Chiari forum.
U r right in that u need a NS and not a NL, but u may want a NL that knows chiari and will do a few more tests b4 u go to the NS just to rule out other issues and conditions related and non related with similar symptoms.
It is very possible to have what Drs term borderline chiari as their criteria is 5mm herniation when chiari is the malformation of the skull....the tonsils herniate as a result of the lack of space.
So by borderline it may be borderline for what they may think causes symptoms, but they should listen to the patient as u do have the symptoms.....so, something is up.
From what many Chiari specialists have learned is that the size of the herniation is not a factor or should I say the length, but the width is, a small 2mm can cork it up if it is wider then a 13mm long thin herniation that still allows CSF to flow....
And many times we can have ICP,,POTS< disks issues ,, instability of the cerviaocranial junction which can cause many of the same symptoms, and a syrinx, sleep apnea, ehlers-danlos....so we have to be checked for all this plus thyroid and vitamin levels....it is a very frustrating and confusing lot of issues that all are connected.
We do have a lot of info and a list of Drs for u to use to research the list is not meant as a referral, it is compiled by the members of Drs they went to and liked, u have to see a few and decide which is best for u ...educate urself on what chiari is and what the related conditions r.
Please see the health Pages for info-
http://www.medhelp.org/health_pages/list?cid=186