I recently purchased a 1998 Sun Tracker 25' Party Barge. All of the origianl seating is in the boat and has been recovered with the execption of the arm rest. The arm rest are missing and i want to replace them. When we measured the space of the arm rest the measurment was a little over six inches. When looking for replacement arm rest I find a 7" and a 9". Does anyone have an owners manual or boat diagram of this boat? I have contacted Sun Tracker and they were no help. The person told me they did not have information on boats gonig back that long, which is hard for me to believe, since they are the manuafacturer of the boat, there surely has to be a record of the layout and construction. Any help would be great.