Slack in Throttle?
Check the adjustment on the throttle cable itself. You can trace it back from the throttle body, it makes a U pattern towards the junction box. In the middle of that U (towards the back of the engine), there is an adjustment. Take the clip off, push the throttle cables together, and put the clip back on. If it still slides out, you can tighten the clip with a ziptie (sometimes the clip loses it's ability to hold the cables together), or you could go buy a new cable ... I think it's like 40-50 bucks.
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