Chopin Sonata 3 - Finale

[didi100]

I have played Chopin Ballades, Scherzos, Barcarolle, Etudes but I don't think I've ever encountered the difficulty I'm experiencing with learning this Finale. I've been struggling with the first 4 pages of this the past week and seem to be making marginal progress. Is this particularly challenging for those of you who are learning this? I read a forum entire where someone said that this is easier than the Waldstein which I learned recently without this much struggle as it was easy to read through. Just want to get your opinion on this one.