Pictures might help verify what we're working with.
It sounds to me like your machine needs a good cleaning and oiling. After sitting that long the oil in it has probably dried out and become stiff. Oil it and turn by hand a few times over the next couple days and it should loosen up.
Some machines are designed to thread right to left. It's possible your machine is that way.
Others here are far more knowledgeable than me. Help should be coming shortly.
Rodney