u/Thin-Way5770

This is my honda cb400 nc39 2004, I got it q while back, the bike is in rough shape and haven't been maintained well. I'm working on it on my weekends but I think there is something wrong with the carbs.

I'm no mechanic, but I think the carbs aren't synced based on the sound

I want to make sure so I'm asking the CB experts here! Thank you in advance

I replaced the battery of my xm4s yesterday and it doesn't seem to be behaving correctly, the battery of the left earbud is changing percentages on its own (sometimes it goes up/down) and they are pretty hot when charging in the case

And it lasts half as long as the right earbud