I think for alcohol induced neuropathic problems, your first choice should be benfotiamine. (this is a better form of thiamine B1).

B1 is depleted by alcohol metabolism and also some drug metabolisms (like Flagyl).

Since you are years sober, I would not expect your alcohol problem as a primary focus anymore, unless you are very low or genetically primed to have low B1 enzyme levels.

Some alcohol seeking behaviors can be linked to pyroluria... which is a benign liver enzyme error, that leads to loss of zinc and B6. Many pyroluric self medicate with alcohol.

You can get serum tests to show if you are low in B6 and zinc and also a urine test to see if you have the pyrroles being excreted. This is a genetic thing and does not go away.
http://www.drkaslow.com/html/pyroluria.html
and
http://www.digitalnaturopath.com/cond/C371961.html

B12 and Vit D3 are mainstays to check for all PNers.
But special circumstances arise with people depending on their own metabolic functions and genetics.

So for you I'd look also to the pyroluria and low B1 possibility.

Also be aware that once a doctor gets hold of a history issue like alcohol, he/she will never let that go and blame everything on it. This is very typical. The patient then languishes with some other factors that go ignored! You've been sober for quite a while, and therefore your PN may be due to other things as well.