Wow. Didn't take you long to get it sort of torn down. Let's hope it's just the carbs as well. Remember to check (or better yet, change) all the fluids (brake, oil, fork oil) and check all the cables (choke, throttle(s), brake). Let us know if we can help you more.
Oh...and welcome to the forum.
Luke M
Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.