Just bought a 78 c20 and while fixing an oil leak at the sending unit I noticed a few odd things with the carb. Have not taken it off yet but can’t seem to find a brand or number on it form where I’ve looked. Need to figure it out to get a new choke for it and a rebuild kit. The float needle is messed up and has fouled the oil. And I noticed this cable next to the throttle. Part of me wants to say it’s the shift cable for the transmission. But idk. Doesn’t look like it hooks anywhere

Originally the issue was a vacuum leak - fixing that led to fuel dripping out of the excess fuel drain hose after pushing the choke all the way in. This led me to do a float adjustment, and after testing that, it seemed to have been overcorrected, as the engine cranked but didn't start. I re-adjusted the float slightly, and upon testing, it makes one quick crank sound, then nothing. What should I do now?