Randy,
Where were the conductors landed on the load side?
It seems like anyone with the smarts to use the oversize conductors should have had the smarts to know about the grounding/grounded conductor stuff.
Homeline is the "Premier" brand available at our Home Depots, BTW.

Bob,
Most of the 3/4" LTFMC we use is listed as an equipment grounding conductor up to 60 Amps, 1/2" to 20 Amps.