Oh ok. I was going off of the picture in your signature and it looked to me like a short bed. Its strange that yours would be different. Different tank maybe? Should be the same one though.

I don't think notching out that little crossmember will hurt anything. I still had enough room on mine for the DS to move freely so I'm not worried about it for right now. If I get something heavy in the bed and it does get tight I'll fix it then.

 

After a bit of adjustment, I have about 1/8th of an inch between the DS and the bed cross member. I'll try to get some pics posted up soon.