Replaced the DESS post and checked programed keys , 4 different keys all one long beep . All was fine one day connected seadoo scanner to check for codes , only code there was a wrong key code , cleared codes and wrote to system . Stated and ran that day. Put it up for the night came back in morning to service machine and nothing . Found DESS post bad replaced now only the one beep. Anyone know who can repair ECMs? Or am I missing something?