Weeds,
I do not know if my adice is sage but I have done the install.
First: I worked faster and safer when I had an assistant.
The bows are installed one at a time.
You start from the rear and work towards the front. Each bow should be a slightly different size and/or shape/bend.
Each new bow screws into the rib in the roof, with the open edge of the bow facing forward.
Panel headliners are quite different. I do not think that there are really total-coverage headliners in Panels, as is the case with Suburbans.
Tim
