Loc: Melbourne, Australia
I know how you feel with that chromatic scale - I've done the same myself. I think by that stage there is a certain amount of fatigue creeping in. Its hard to get a perfectly seamless chromatic scale there in a real performance - even though it's easy enough when you practice that passage on its own.
Nevertheless, a very nice performance! I've always preferred the slower presto in the 3rd movement, which you do. The full-on presto leaves me a bit cold. Nice work!