Hi Herb, have you had a 3 -5 hour glucose tolerance test yet ?
I was told my sugars levels were fine after a gp tested it in her office but my neuro sent me for a GT test and they were not fine, i was prediabetic, a well known cause of nerve damage to doctors that know about PN these days.
If you haven't had a GT test i would definitely ask for one and also ask for your insulin levels to be drawn at the same time.
I think that the A1c tests are ok for average blood sugars over a 3 monthly period but there could have been occasional high spikes that don't get picked up, only if they are constantly high they will show up on those A1c tests.
Besides supporting the nerves with B12 and other vitamins B's, i would really think about using alpha lipioc acid supplements, i believe the R-lipioc is much more potent than the original ALA, it does help to lower blood sugars and has other good qualities as well and if you can do a half an hour walk every day, it can make a real difference to blood sugars as well.
best of luck anyway,
Brian