Dual cylinder rack for my MM 210 Welder

I recently bought a used spoolgun to try my hand at welding AL and needed to buy a tank of Argon, but my welder would not hold the second tank. Miller sells a kit-but it's about $200 and widens the stance of the welder quite a bit so I started making this. Still need to build the top support rack, but the bottom is done except for paint.

http://picasaweb.google.com/kdeckster/MM210DualCylinderRack#