Robert, have you tried adding a therapist or addictions counselor to your recovery program? I have a number of friends who tell me that working one on one with a good therapist, in addition to daily AA/NA meetings and active participation in the fellowship, was a vital component to their achieving long term recovery. One of those friends now has 23 years sober and runs an addiction treatment facility.
Another thing you might explore is Vivitrol. This is extended release naltrexone, a once a month injection that you usually hear about in connection with opiate addiction (it's an opiate blocker), but which can also be prescribed to treat alcoholism.