How come there's a Letus sub-forum and not one for the Redrock M2, SGpro or Brevis35?

Because Letus is the only one which does not have an official user forum at their company's main web site. If they did, I would probably close this one.

All of the other adapters you mention have their own message boards at each of their respective company's web sites. I will not compete against an adapter manufacturer for forum traffic on their own product line.

Previously I ran a forum for what has become RedRock Micro (back when it was known as the Micro35 project) which I closed when they started their own forum. The link to those archived discussions here at DV Info Net is http://www.dvinfo.net/conf/forumdisplay.php?f=81

Hope this helps,

Chris
That's what I was thinking too but prior to my original post, I noticed all of them have official forums.
This forum is terrific Chris. It's a wonderful resource!

Don't confuse a dealer's forum with a manufacturer's forum.

I won't compete against an adapter manufacturer's forum. I'm not concerned about a dealer's forum.

Oh! Thank for being patient Chris. I did assume LetusDirect was the manufacturer. Sorry 'bout that.

It was this forum, it's real name policy, and Chris's attentive moderation that served as a model of sorts for our own forum. These things are incredibly useful, powerful mediums providing the garden is watered and weeded daily :-) Chris is kind enough to tolerate us hanging out here a bit too, for which we're quite grateful.