Rach 2 advice??

[david456103]

Hi guys,
I have around 3 more months to prepare rach 2 movement 1. I have the whole thing learned, and most of it memorized. THe thing is, there are some (very very very nasty sections) that I can't seem to get the hang of at tempo. I dont think technique is the issue,as I have a good technical grasp on several pieces that are considered "harder" than this. Here are the sections i have issues with:
piu mosso(c minor, pp)-I dont see how it is possible to play this at tempo without slopping a little....unless you get lucky. i have the optimal fingering(i think), but i think this is one of the most difficult passages in piano literature.

configuration preceding piu vivo(ABAB, except the first A is a double note): how do you get this section 100% accurate...without relying on muscle memory.?? Again an extremely awkward section

piu vivo: see above.

meno moso(ending): see above.

Any help is appreciated.!