I have a 93 XR 600 that the carb sticks slightly when attempting to open the throttle while the bike is running. When enough force is applied to over come the sticktion the throttle opens up somewhat abruptly which could become a safety issue. When I bought the bike the guy said this has never happened before so I thought the cables were going bad. After inspecting and lubing the cables, the carb worked smoothly until the motor was running. I believe it is the vacuum that is preventing the slide from working smoothly because the carb only sticks when it is running. I saw that there was some discussion in a previous thread about this, but what is the solution? Do I need to replace my carb or slide or both?