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You can remove the threaded rod running between the ball socket and the end threaded into the rubber boot to clean and adjust. First pop off the socket from the ball. There should be a small pin fastener holding the ball in the socket which needs removal first. Then screw out the rod where it connects to the fitting on the end of the exposed rubber boot. You can also unscrew the ball socket from the threaded rod. I fixed a high idle problem disassembling, cleaning, lubing and reassembling. Adjusting the length of this rod should be your solution.