Thanks to updates to the Remix, previous runs are now invalid as various jumps are no longer possible. Level 4, for example, has a large ramp run that is supposed to carry you onto a platform at the top, but no longer does.
I messed up level 4 pretty badly, so there's still several seconds to be saved.
And still more time could be saved if I had better load times. Based on re-watching the video, I think I lost about 7 seconds to loads.
Moderators, could you maybe add a separate timing area for time without loads? If you do, I'll make sure to use splitting software before I submit a time in that field.
Also: CHALLENGE ME!!! Seriously, though, it is kind of disappointing to know that I hold the world record only because nobody's challenged it. I'd love to get some competition. :)