I think the issue with the backrest is that the pad isn't contoured and it makes me sit forward to avoid the discomfort after a while. After reading another thread about this Backrest I took to the foam insert with a Bread knife and contoured it myself which was easy enough. I haven't re-installed it yet and I'm also thinking of taking the foam out and filling the zippered backrest with beans (not the edible type) if it's still uncomfortable. The backing board should keep it's basic shape.