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Weak spark 86 GS550ES

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    Weak spark 86 GS550ES

    Having my one owner low mileage bike completely gone through for spring. Along with usual carb rebuild they say spark is weak, they ignition harness plug was dark and hot spotted and fused together, the had to cut the connector and crimp the connection together, this helped spark but still on weak side. Battery is new, everything test within range but low side. I hate to start parts guessing. Any thoughts? Coils, ignitor, stator, etc .Input appreciated!!!
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