Welcome to NeuroTalk...

Please visit our Vitamin forum, where I have a thread devoted to this B6 question:

http://neurotalk.psychcentral.com/thread30724.html

Serum levels of vitamins can be deceptive. If you are seriously concerned I would get a intracellular test to see what the cells contain.

Spectracell labs does this type of evaluation:
http://www.spectracell.com/

Elevated levels of B6 may be from your consumption of fortified foods. (ranges were made without fortification).
Or it might reflect that you are not activating pyridoxine (which is not active in the tissues) to its active form called P5P (pyridoxal 5 phosphate).

The neuropathies from extremely high intake of B6 are somewhat different in presentation than the neuropathy from LOW B6. Low B6 typically presents as sensory, paresthesias.
High as gait impairement and dizziness types. If you are not converting pyridoxine to P5P in vivo...you would have signs of B6 deficiency.

Vitamin B6 toxicity is not common, but was reported back in the days when 500mg a day or more was a treatment for PMS. Many women took this dose, and a very small number showed up in anecdotal papers on the PubMed as a result.

There are other possibilities for your symptoms. Have you had Cipro or Levaquin lately? One treatment course of a fluoroquinolone can cause PN. Use a statin? Flagyl?

Here is a link to other drug causes:
http://neurotalk.psychcentral.com/thread122889.html
The subforum where this link is, has alot of other interesting information. So please do read there too.

I'd check your B12 and make sure your reading is at least 400.
Also your Vit D. Low D is showing up commonly now in many people, and we've had some on our PN forum!