Well after hours of looking and figuring I finally found out that I had the engine too far forward and the reason that the ending would not slide back was because I used the stock ground cable on the 5.3,, if it is used it will not allow the mounts to adjust. I removed the bolt and relocated the ground cable, then used a chain winch to pull the trans and engine rearward and get it into the proper position... thrilled I got it lined out and fixed yet at the same time I felt like a idiot