You pictures in post #69 look like what I did. Where’s the problem?
It wasn't the frame, it was the tarp I initially bought from National Covers. I bet it was less than 7 mil - it felt paper thin compared to the HF tarp which was 12 mil, and it was over twice the cost. I was in a rush to get the frame up because the cold was coming so when I take the tarp off, I'll use wing nuts and bolts to make it easier to put back up the following year.