It would be nice if someone familiar with this particular setup would chirp in with a quick answer, but I guess it's just you and me for the moment.
Many would just rag on the old versions.
cd to the directory that contains your httpd.conf and
grep -R 20082 *
If you want you can search the entire filesystem with
grep -R 20082 /*
But you probably don't have to back up that far. (it will be messy anyway)
There has to be a Listen line somewhere.
grep -iR Listen *
They use Include lines a lot, I include dozens of conf files in my setup.
Your httpd.conf may be the first file read, or it may be included in some other file that the server reads first.
Also your httpd.conf may include other conf files into it.
grep -iR Include *
I think here the trick is to figure out how it works, then fix it.
Let me know what you discover and I'll try to help you figure out where to put the rewrite lines.
Remember your really looking for the :80 http setup not the https port 20082 setup.
Russ