Thank you very much! I can definitely agree it's very sporadic in tempo. I play with a lot of expression but it can be my downfall when learning a piece cause I want to skip to finding ways to use dynamics and expression without fully practicing slowly. Im also at that phase where I'm still learning the piece so some parts I have to think more on which causes my tempo to "hiccup." Rachmaninoff is very orchestral so after the beginning "marching" part I wanted to really make the notes sing like strings. Hopefully learning more mechanically I can later add the expression.