I have an LX 426-I left the ignitition key in the wrong position during the week since last use. The battery drained-but that's no big deal. But the digital service clock counted off an additional 35 hours or so, before the battery went dead. Does anybody know if it is possible to roll back the reading on the clock, and how do you do it? My local dealer thought it was possible, but did not know how to do it. Thanks for your help in advance.