Storm.
That screen house canopy thing only weighs about 30 lbs.
The jack stands were fine.
I think that what happened was this: I had two bottle jacks under each beam to lift them a little. This took some weight off of the jack stands. A strong storm rolled in and the wind blew it over. Some contributing factors may have been soft/uneven ground under the plywood that the jackstands were on.
You can see here how the stand actually pushed through the plywood in one corner. That is the only thing that I could find.
I am going to let my thread in the general discussions section go for a while longer befoe answering.
UPDATE:
As of right now, the suspension is all back together and it is sitting on all 4 tires.
I still need to put the bed back on, hook up the trailer light wiring, add trailer safety chain attach points, bleed the brakes, fill the front diff with gear lube, Muddle around with the alighment, and pray that the 8" coils sag alot from where it is now when I move it around and stuff.
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