Buddy bucket seat upholstery questions

[chewychevy67]

I've been having troubles with upholstery in my area. This will be the 3rd time I've had to do these seats. Anyone out there keep them the way gm did them with the fiber board in the back that covers the attachment area. First guy I had do these did an awful job and the second guy cut my covers up and tossed the fiber boards and was quite frankly a rude a$$</le about it wheni questioned him plus he screwed the fabric to the seat frame. He told me if he had to do it that way he didn't want the job so I took my seats home. Do most ppl just tuck this In and leave the arm exposed here?