That's been an ongoing issue with Lido mounts. I'm not sure how big they are, but I keep getting the impression they're a small, one man organization. At least their customer service is!
Most of their mounts will not properly support remote heads, even a 706 (about 1 pound). Handhelds are out of the question!
You might want to visit my web site, and look under Radio Mounts. There are about 5 or 6 links to the various makers of these devices.