At about 130 hours, hourmeter went back to zero. Then started accumulating hours up to about 21. Then back to zero. Now about 10. The last time it went back to zero, I had switched the ignition switch off - then back on quickly. It also now periodically says "chg hyd oil" and "chg oil". Anyone else had this problem? Should I just replace the meter? Can I simply just connect a "new" meter to a 12V source and let it accumulate hours up the correct reading? I have been manually keeping the hours since the first meter failure.