So you need to be specific and mention which bars are troublesome, perhaps highlight why its troublesome and what you are trying to do to solve it.
Well I have a few specific passages in each piece which are giving me trouble and any specific thoughts would be greatly appreciated, if you have the time and don't mind.
Chopin Ballade No. 3 - I don't have bar numbers in my copy, so the troublesome area is the section marked dolce, with the scalic passage /arpeggiated figures in the right hand. I have practiced slowly and securely but I can't seem to get the right sort of sound with the speed and accuracy to make the right hand flow really lightly and evenly. I also have some balance issues with the section marked smorzando and then sotto voce, at the moment I am trying to exaggerate the balance without the una corda pedal for now.
Beethoven Tempest - The first movement has been giving my real troubles from a technical point of view but I think slow and relaxed practicing has been helping. Again balance and evenness from bar 21 to 39 has been an issue which I am steadily working on very slowly. The same with bar 103 - 118.
I'm still working on speeding the last movement up.
The problem I found with memorizing everything is that it slows you down a great deal and the amount of time you need to learn the piece increases. I would focus on improving your reading skills but this is a long term investment.
Yes this is a major problem of mine. It takes me ages to learn a new piece because of my poor reading skills, I tried to improve them for my DipAbrsm exam, whilst they have got marginally better I only managed to scrape the bare minimum pass for the quick study section (pass mark was 6, and I got 6) I know it takes a lot of dedication and time to improve reading skills, but because I have not chosen to specialize in performance and I have chosen a career in academic music, finding the time is very difficult.