Update..............The overcharge condition that I experienced for almost a year and a half is finally solved. I had several facilities, including Prevost Mira Loma, look at this problem to no avail. It cost me about $1500, but there were many many hours spent on this that I wasn't charged for. Prevost Mira Loma even changed out the alternator for a new one, with no change in the condition they put mine back in, a total of about 4 hours "no charge". On our way home in April of this year I finally took it to Marathon in Coburg and they fixed it. The 270 Amp alternator was not sufficiently grounded with the mounting bolts. They added a grounding cable from the case directly to the chassis ground lug. We now have about 1700 miles on the coach since then and problem is solved. Thanks to all that gave me your input.