I am losing hand and finger stretch capacity and some flexibility as I grow older. **sigh** I am now 62 but have continued to work on piano repertoire as though I was still 25. This has become particularly obvious when I practice Brahms (the Paganini Variations in particular) and Rachmaninoff. I am not waving the white flag yet. My question is: what can I do to reverse this, or at least delay further loss of piano technique? (I want to remain true to a composer's written directions).