I need some measurements. I am going to take my trailer with 16' deck, and add a 2' dovetail. I am going to move the axles back 18-24". What I need are dimensions from some other trailers to make sure I achieve the proper balance. I would appreciate if you could give me these measurements: 1. length of flat part of deck and dovetail 2. distance from coupler to front edge of deck 3. distance from coupler to center of axles 4. spacing of axles (center to center of axles) Thanks in advance!