Throttle/Shift Cables

[Blue_Runner]

My throttle cable has a cracked shroud right where it enters the rubber grommet on the front of motor. It is starting to get rusty causing idle & shifting problems. It is getting bound at the rusty spot not allowing the RPM's to adjust down to idle after coming off a plane or just shifting out of gear into neutral.

My question is where should I get the replacement cables? And what brand is best?

The motor is an '04 Yamaha 150 2-stroke. It has the Yamaha premium flush side mount boat control, mfg. part # 6X0-48206-12-00.

Thanks!
Blue