Hi Michael
<< Hammer gets caught by the check with the jack impailed
against the knuckle. It's as if the hammer starts cycling faster than
the key eventually jamming up.>>
How high is the checking distance, how close is the let-off, and how much
distance is there between the shank and rest cushion when the hammer is at
rest?
This is not a new problem, but there are several fixes.
Regards,
Ed Foote
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