Hello. I am a first time axe fx user so I am brand new to this. I just purchased a used axe fx 2 from someone on eBay. I received the unit with none of the factory presets (which is fine but may have something to do with the problem??) Every time I turn the power off to the unit all of the presets I made disappear. I save them and as soon as I power off the unit they disappear. What is going on? Thanks for any help.