mcromo44, thanks for the info, I'll check out that website. I decided to rebuild the carbs, not all that bad, but had some varnishing and minor corrosion. I am completely disassembling & cleaning them now, 3 of 4 done. I ordered 4 new carb rebuild kits yesterday at $13 each, so I'm waiting for the kits. The tuning/sync thing is where I'll have trouble as I don't know how to do that. I'll take it to a cycle shop for that.
I'm gonna post pics of my CB350 now. I haven't taken any pics of the CB550 yet, but I'll get those up once I have them.