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Those are the same cells that are used in the orbtronic ones, so they should be the same size shouldn't they?
Alright, ill give it a go!
The word "Loc-line" in my first post is in blue because it is a link. If you click on it it will take you to the part page in the McMaster Carr website were you can buy a 1 ft hose segment for $8.89 online. You will need one of this per light arm. Additionally each light arm will also need:
One double socket adapter
And two socket mounts
Socket mounts allow you to secure a bolt through them so that you can affix a camera tray. They also you to secure the light on the other end of the hose. All these loc-line parts are in the 3/4 inch internal diameter size.
The tray itself is just a short aluminum bar of about 1 inch of width. It doesn't have to be that narrow, it could be wider. It just so happened that size is what I found in the scrap pile in my local metal mart. I drilled two holes on each end, one for the camera and one for the light arm.
The light is secured with a piece of stainless hose clamp. This piece wraps around the body of the light. Two holes were drilled at the ends of the stainless band to run the bolt coming out of the loc-line mount.
The loc-line company is in Portland not far from you. They do list 5 different distributors around the Seattle area here: The Original Modular Hose System | Loc-Line - Domestic Distributors
The loc-line part numbers that you need are these:
Hose segment - 61501
Double socket - 61514
Socket mount - 60533
thoughts on the pros and cons of each? 
My trays are 1" wide little bars of aluminium that I buy for 50 cents at my local metal mart. I use the locline hose as light arms/handles. I have not tried SRP nor backscatter, but in my opinion I do not see any clear advantages that would warrant paying the extra cost.For tray: was looking at getting the Backscatter tray ($59) or SRP tray ($130). While I like the boomerang design of the SRP tray, I'm not sure I can justify paying over 2x the cost
Did you see the pictures in my first post? There is one with a top view of the light attached to the socket mount. I run a bolt through the hole that socket mounts have in their center. I secure the bolt with a nut on the other side. You do the same thing with the tray: Bolt -> tray-> socket mount -> nut.
Regular loc-line segments have a male end and a female end so that you connnect them to each other to create the length that you need. Socket mounts only have a male end. You need the double socket to convert the male end of your arm into a female, thus making it possible for you to attach a socket mount. I use socket mounts to attach the light on one end and the tray on the other, so the arm has to have female connections on both ends. In the picture attached on my first post the double socket is located on the tray end of the arm.
Again, refer to the picture on my first post. I use a stainless steel band that I cut off from a stainless steel hose clamp. Wrap the band around the light body, run a bolt through it and through the socket mount and secure it on the other side with a nut. Pretty simple and way less than $50.
