you don't always have to tear down _completely_, just be smart about it and mask well. my bianchimatic repaint job:
self etch is your friend.
Rust-o-leum cobalt blue metallic is a near dead match^
solution for kinda rust-pitted rims^
not even BJ has Bianchimatic sized Bianchi decals, gotta cut your own^
don't forget to wet-sand
and BLAM, that's how it's done son. lazy disassembly style.