== Change sensitivity in System Preferences ==
''Also there is a known issue with crimped loose track pad cables where by design it runs over the battery.'' The cable is routed through the lower case over a sort of guillotine or gate - repeated pressing on the spacebar and keys can hammer the cable to the point of working lose from the connector on one end, or crimping cutting the ribbon cable.
Known fixes include:
* smoothing the cable flat, or
* wrapping it with a scrap paper jacket to stop bouncing and shorting.
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Good Luck,
N.