1998 Sea Doo Challenger 1800 - Throttle Cable adjustment

[PHI_JAMMA]

Hi Everyone....I have been trying to adjust my throttle cables so I can get the boat to idle properly. It is currently idling too high(around 3000RPM in water)....I follow the instructions perfectly and it idles too high....when I try to back out the idle screw, the linkage will sometimes not touch the idle screw?....so I make sure I have enough slack so that it will, but sometimes the linkage doesn't snap back....it will snap back fine by hand....The procedures I use are the ones in the manual....The cables are three years old...is it possible that cables need to be replaced?