Ok, here's what I would try. There are some steps for this process so bare with me... These steps apply to the RV082:
1. Go into your RV082 setup.
2. Click the Firewall tab.
3. Enable remote management on port 8080 and save the settings.
4. Under the firewall tab click on Access Rules.
5. Click Add New Rule.
6. For Action select Allow, for Service select HTTP(TCP/80~80), under Log choose whatever log options you need, for Source Interface choose either WAN1 or WAN2 depending on your incoming connection, for Source IP choose All, for Destination choose single and input the internal address of the web server.
7. Click Save Settings.
8. Choose Cancel when the option box appears.
9. Select the Setup tab (at the top).
10. Under Setup choose Forwarding.
11. Under Service, choose HTTP(TCP/80~80).
12. In the IP address area enter the local IP address of the web server.
13. Check Enable.
14. Click the Add to list button.
15. Click Save Settings.
Now, under your current configuration, you have probably configured some of the things in the steps above.
Anyway, that ought to work for both the RV082 and the WRV54G (the steps for the WRV54G will be slightly different, but the concept is the same). I'm not sure if you are going to use the remote management, but if you do be sure to create an Access Rule under the Firewall area for HTTP(TCP/8080~8080).
Let me know if that works. If not, there are some other things to try...
Good luck!!
deeno