can anyone tell me what all is involved to get a older head with the lock levers on the sides of the feederhouse opening to work on a newer combine with the lock levers under the feeder house opening.I have gone the other way but I had parts heads to get all of the needed parts.do I need to find a salvage new style head to get parts?? or is there a simple fix. I am sure that over the years there have been many others that have run into this same problem. any info would be great!!  THANKS!!