same physical server, same nameserver, but one gets a "B" rating for having glue, the other doesn't

http://www.dnsstuff.com/tools/dnstim...ist.org&type=A

vs.

http://www.dnsstuff.com/tools/dnstim...tist.us&type=A

So what is this glue, how to I set it up for my .ORG account?

I've looked at the resolv.conf, named.conf, hosts.conf to see any differences ... none so far. WHM'd my DNS zones ... same ...

Is there something else I'm missing here?