I’m not a cb500/550 expert, but Honda throttle cables typically go around the headstock, and then back under the tank. Yours have a very tight first radius and don’t go around. With your new cables, let them run out more around the front and back down the left side. Your clutch cable is also too long, again, let it swing a wide arc around the front, before coming back down the right frame down tube (left and right are sitting on the bike. Throttle tube is on the right, clutch lever on the left.).