Running Time Machine only 1 time a day at 02:00am?
As you said that Time MAchine Editor didn't work fine for you then I search in web and find :  TimeMachineScheduler it disables the automatic backup function of Time Machine and installs its own launchd daemon.



Time Machine Editor (free software) allows you to specify a schedule for Time Machine to run. it changes the one-hour interval of Time Machine backups. You can change the interval or decide to make daily, weekly and monthly backups.