Thanks ahead of time for any information. I have a 2014 XP4 1000

I am trying to install The Twisted Stitch Vortex rear bench in my RZR. The install has been difficult since it came with no instructions and its hard to get someone on the phone at Twisted Stitch. I think i have everything installed except the rear plate that goes above the seatbelt mounts. I cannot get the plate to sit flush against the mounting bracket because the seat belt mounts are in the way. It seems I either have the wrong plate or need to do something to modify the seatbelt mounts. Does anyone have any pictures or info about how this plate gets mounted?
http://s1377.photobucket.com/user/ccale11/library/

Thanks