Hello. zip-a-dee-doo-dah

Take off/out the cables from the housings - remove each cable from its housing.
Clean each cable and sand-until-shiney.
Lubricate each cable (light oil or very light/white grease).

I have found that many cables/housing have been "kinked" (in the old days) - because return springs too-easily pulled the throttle/choke cables "inwards".