Hermle 351-830 Runs Fast

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    WilliamFlaherty
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    Hi, have a Hermle 351-830 that came out of a regulator clock that my wifes uncle built.  When it was given to me the chimes hammers were not working.  I cleaned and lubricated the movement and rebuilt the movement mount in the case.  Everything is working except the movement is running fast.  I replaced the suspension spring and even put a longer pendulum leader on with no luck.  The escape wheel is in good shape.  I am at a loss as to why it continues to gain time.  It gains about 2 -3 minutes every hour.  Would appreciate any suggestions.

    Thank you!

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WilliamFlahertyHermle 351-830 Runs Fast