Thanks Denny, that makes the problem a bit easier to navigate. My factory assembly manual shows the tab, of course the manual is for the 54. I just remembered there were two drawings, one of the long bed and one of the short bed. I'm at my office and will need to check the book when I get home. Perhaps the long bed was the reason for the tab. However if I remember correctly yours is a 3/4 ton (long bed).
