Almost any injectors go bad/jam/get clogged if you let the car sit with a lot of ethanol in them for a long time.
This is because ethanol binds moisture. Even worse with methanol.
So you need to either use the car regularly or put gasoline into it and run it for a bit before you store it.
Yeah, we are used to this here in Brazil, as we have E100. Normal procedures hehehehe.