Dear JMK, I feel your pain! I just wrote another post comparing Magoosh to the Manhattan prep books for this very reason. Because I honestly don't think Magoosh helps people like us. Sorry to say, although I do use it and find it useful as a refresher to things I learn through Manhattan Prep 8 books (really breaks things down for people like us), Keshwani GRE/GMAT Math fundamentals on Youtube and Khan Foundation. I guess what I am trying to say is it's perhaps not so much you, as much as the resource you've used. Sorry if it doesn't answer your question but I think I agree with BumChiki that just a algebra class is not enough (maybe supplements, definitely all adds up!)