I'm on page 308 of the Fowkes translation, although I've read considerably more pages than that if you count the ones I've reread. :)
I definitely understand the feeling that it is going right over. I already know I'm going to end up rereading this fucker at some point. I've read a couple of different discourses / texts on dialectics from Marxists at this point, but to be honest, I don't really feel like they've helped me. A lot of the time I find I realize I've lost the contradictions he was working with and end up having to go back.