Thanks all for the replies.

BTW I got my permit in 2006 at which time my county was using NEC
2002.

I will definitely be using the grounding bushing to insure box-to-
conduit ground. John mentioned to use the grounding bushing after the
locknut. Couldn't the grounding bushing be used by itself? The ones
I've seen are pretty beefy compared to the locknuts. Is it code or
personal preference that you use both?

--zeb