That's great stuff, Ric.
Yes, we do have a tractor supply, right in our own little town. It's quite convenient.
On the T tracks: what I did was used bolt cutters on the heads of regular bolts to snip off two sides. Then I used my axe grinder to grind down the edges that I cut off so I ended up with a bolt whose head looked just like a T. That then fit right inside the channels in the aluminum frame. Put it in, give it a small twist and you're ready to add washer and nut to tighten it in.
So that's how I connected my wood and conduits "after the fact."
Your 1" aluminum over the door is better than my wood, but, at this point I was ready to just put something up and be done with it.
I very well may replace that wood with a 1/2" EMT later. After all, they are less than $2 per 10' stick.
