On the back of the cab there is about 3" of overhang. It fully wraps around the back of the frame. I am going to start mocking up the bed soon and it seems to me there is way too much fiberglass here. The manual doesn't mention it at all and I can only find one thread where it was discussed. I was considering removing all of it but I'm not sure

You can see at least the one side in this picture



When the truck was shipped they laid the bed on top of the fiberglass. Is this right? Seems like it would create a slope. I am a little nervous about it. I only want to cut once if you know what I mean. I am not sure how to proceed



Really appreciate the benefit of your experience. Any and all advice would be appreciated.

Jesse