I have been using the CED M2 chronograph and love it but when I get an EO error (missed start sensor) per the handbook, I have to turn the unit off, and back on to get it to reset the shot. The string of shots just prior are logged and recorded . Pressing the OM (omit) button to omit the shot or the CLR (clear) after the error message does nothing. Otherwise the unit functions fine. Wondering if I have a defective unit or if other shooters have seen the same thing.