You might ask Nils Mathisrud, at the following site:
http://home.online.no/~vingtor/
You might also ask at the IPMS Stockholm forum:
http://www.ipmsstockholm.org/forum/index_english.htm
But as for forums devoted to Norwegian aircraft, I know of none. If there are any, you'll find them from IPMS Norway, which is linked through Nils' site.