I took a shot at this because even though I fit fine, I do end up bumping the bolster when I slouch.

There are about 6 plastic welds that are very difficult to separate. They are like big (1" dia) plastic rivets that were inserted through holes on the panel and then melted flat. I tried melting the edges and prying them off and only got one loose. Then I got worried about how 6 open holes on the panel would look like and quit.

I'd love some info from anyone who has done this successfully!