The scherzo is full of this pattern, which requires rapidly restriking the top note of a chord. Again, the top note is usually initially given to the 3rd or 4th finger and it simply can't get off the note fast enough when I try a real Vivace assai, so I end up with unwanted ties.
My advice: In addition to practicing with strict dotted rhythm, practice also as non-dotted 8th notes and then relaxed dotted rhythm. If they are all turning out as "ties" in a performance, sneak in a few non-dotted 8th notes rhythm to "prime the pump".
My advice:1. Omit the first low Bb.2. I think he's advising thumb on the low notes because they *aren't* marked legato. That said, if it's inconveniencing the legato of the top notes by throwing the hand off-balance, play them as "normal" sixth fingering.3. Try rh 2, 41, 52, 31.4. You're correct to use the rh, but play the separate groups with differing emphases. 5. I don't like his fingering. I think it's chosen for consistency across the groupings. I'd do 123211; 312112 (but your hands are smaller, so 1 on the first will be needed); 123121. There is room for individual choice in such passages, though.
I haven’t played this work. I don’t even play the piano. . . . My advice: . . .
LEGENDARY!
Hmm. I'm not sure slower practice has done much to improve my ability to play quickly though. I can try playing it as non-dotted quavers whilst lifting the upper finger off the note as quickly as possible anyway.