Thanks Checo,
Yes the calibration was set up properly, and I have since found, and corrected the problem, now that it finally became a little more frequent. All of you have probably seen the forward/reverse optical switches get dirty and cause the "center handle" display. That is all it was. It finally threw a couple of codes ( 341,343) that helped. What threw me off the track was the fact that when the driver touched any of the auxiliary function buttons, it would correct itself and start up. The driver touching the multifunction handle, or one of the switches, was electrically "jarring" ( for lack of a better term) the optical switches,and causing them to work correctly, but only temporarily. A good cleaning with compressed air did the trick. but in the past I have sometimes had to remove the switches and clean them with electronic spray cleaner.