I just received some Ultra Clamps I ordered from Amazon and mated them up with the VML. This is clearly the easiest/best solution I've seen. It screws right in where the useless stock clamp used to live and grips the light stand solidly. It's like they were made for one another. Now if we can just get Paul to source some of these with a small ridge built in the back to prevent twisting...well then we'd have a pretty solid unit.
The stock clamp would never have gripped this diameter tubing.
I also found that tilting the bottom of the unit in towards the stand seems to reduce the strain from the weight of power cords and prevents the possibility of something pushing in on the unit and breaking the mount off. This would be even more effective with some sort of strap to keep it in place and support the weight.
All in all, I'm very pleased with this setup. I may start experimenting with attaching a "ridge" of metal to prevent twisting. What's a good adhesive for anodized aluminum to bare aluminum? Anyone with improvements is encouraged to share!
Oh yeah, here's the link:
http://www.amazon.com/PEDCO-P-UCA-Pedco ... 675&sr=8-1