I had the same problem. Metric allen key was spinning in the bolt. Got a set of Imperials and bashed the nearest bigger key into the bolt head. Pressure and torque equalled free stem. Still got the imperial keys if you want to give it a go.
@jimalex started
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I had the same problem. Metric allen key was spinning in the bolt. Got a set of Imperials and bashed the nearest bigger key into the bolt head. Pressure and torque equalled free stem. Still got the imperial keys if you want to give it a go.