I have a Panasonic DMR-E85H DVD recorder and a pretty old non-widescreen TV. I can only get most pre-recorded widescreen DVDs to play in letterbox format. The handbook says that if I set the TV aspect to 4.3, DVDs ought to play in 'pan and scan' format (unless prohibited by the recorder of the disk). But almost all the DVDs I've bought/rented only play in letterbox. I'm sure this is basic stuff - can someone help please?