I had a chance to work on the machine today. Just as Workshop had thought, the spring was broken on the bottom.
You can see where I have started to drill the sheared bolts out. The dowel pin drove out fairly easily. The bolts are a little tougher. I bored up to 27/64 and put some heat on it. It seemed like it pulled some wd40 into the threads. Hoping with a little soak, it will free up.
The spring bracket on the backside is welded to the track frame
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I called Off Road this past week and they will ship two springs for $648 ($282 for each spring and $84 shipping). I'll order them next week.
I plan on cutting the springs with the torch and will need some advice on exactly how to split the tracks.