Hello Keith and welcome,
MH won't let you post personal emails on this site due to privacy but if at any time you would like to speak to someone privately, just put the arrow on their name and go to "send message".
Now, I don't have too much to add b/c the ladies above have done a great job with their advice. I know how you feel, being an active person and having trouble accepting that there is something happening that is out of your control. I was training for a marathon when my symptoms started to become to an unavoidable level, yet I denied it and kept on pushing myself and I am very sure that is what caused my symptoms to snowball very quickly. I have the left sided issues too...and even though I was limping on my left leg, I still went for a run that day...wasn't a wise choice. 5 days later, my gait was completely compromised and I was in shock at how quickly I deteriorated. Unfortunately, I didn't have a dx to work with and no one else seemed to know either, it took me six months to find out I had Chiari and it that time a lot of damage was done. So what I am saying is that it is a fine line b/w waiting and waiting too long. By the sound of you symptoms, there is progression and you need to see someone knowledgeable.
I am wondering if the "specialist" you saw was a neurologist (NL) or a neurosurgeon (NS)? There is a vast difference between the two as far as how much help you will get. I would get all your scans, reports together and do some research to find a good NS near you. We have a link here of some that our members have used and liked, but again, you need to research to find the right one for you.
http://www.medhelp.org/posts/Chiari-Malformation/LIST-OF-CHIARI-SPECIALISTS/show/1293483
I can't help you with insurance advice b/c I'm in Canada and our health care system is different but it sounds like there are some here that can.
Good luck...please keep us posted!
Carolyn