I could probably help a lot in that forum. I service a lot of Muratec machines and deal with them on a daily basis, so I am sure I could be of some help.
Muratec does have a tech forum but you have to be a Muratec dealer to log-in. If you go to their web site, click on Dealer Login and enter your username and password you will see the link for the forum.
Some are true muratecs, but others are rebadged samsung's and oki's if you can believe it and the odd konica minolta as well (engine side at least)... plenty of variance thats for sure!