You got the part of the piece right
I counted and it is bar 68-69 I am talking about
Do you have any tips on how to manage it? The rest I can do technically, and I don't have that much trouble to bring out the melody anymore(pieces like Schubert op 90 no 3 may have helped me with that), but the climax as you call it is insanely difficult. Have you got any tips?
In practicing it, really emphasize the 3 vs 4 nature of these two bars. Chopin really pulls out the stops here to create enormous tension between the competing meters. For starters, make sure your fingering of the left hand chords in the triplet figures is very pianistic and fits your hands, allowing for smooth position shifts. Nail that first. Next, do the same for the quadruplets of the right hand. Really voice the hell out them, too. I mean, like, really sing out, Louise! Keep them very, very even. With both hands together now, be very conscious of how the LH triplets only fit the quads of the RH on the first attack of each beat in the bar. Thereafter, the triplets' 2nd and 3rd pulses, fall between the quads above. Do it so slowly your brain goes into near hiberation until you feel the rhythmic displacement perfectly. It will feel natural soon enough.
Finally, give this great tune plenty of space to sing. Think of opera here.
Where there are larger intervalic leaps in the RH tune, give more time/space between the larger leaps. You'll notice singers and string players do this. It sounds like this is not very "musical" advice. Sounds calculated. But, in fact, it works for dramatic purposes. Plus, you can play the tune without crashing and burning. Make expressiveness serve you here. Take time to get the leaps and the dramatic nature of this piece really pops out.
Have fun. I love this piece so much. Programmed on my first important recital, with the B-flat minor Scherzo, when I was 13.