I have been going back and forth with Agri-Cover on the long rear seal bar. Turns out they had indeed included the correct bar; it just happens to be too long.
The "correct" bar included in the kit is 57-3/8 inches long, which pushes the rear corners of the topper way too far past the edges of the truck bed. In order to fit the bar, I had to shove the entire canopy forward about 3/8 of an inch, but this then creates an air gap at the front of the topper, where it meets the front bulkhead of the truck bed.
IMHO, the rear bar doesn't need to be 57-3/8 inches long, but 55-3/4 inches. This would allow the front and the rear ends of the topper to fit nicely within the contours of the truck bed.
They offered to cut me a shorter bar. We will see if they follow through. All in all, customer service has been good, but I have to say the overall look and feel of the product is a bit "agricultural"... --pun intended.
I went to visit dad for Christmas. The Jeep was out in the heavy rain for three days. The fabric got soaked on the inside, especially where the top meets the front window. Everywhere else appears to be dry, and the bed itself has stayed dry.
Thankfully, I have a garage at home; I pulled the Jeep into the garage and opened the rear curtain to let the top dry up.
If you live in a rainy area, like the Pacific Northwest, and do not have a garage, this top might not be the best choice. Just an FYI.