Al;
...so in your experience, it also didn't retract?!?...I recall another user having that experience...either they truly don't have a retracting spring, or this is a weak point in the design, which often fails, needing an outside compression force to retract the piston...the important thing, the extension of piston to make the irresistible force necessary for the job is certainly there, but the retraction seems to be a design weakness...
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