Internal parts for 39-329 broken; replace whole unit?

A handy person from st paul says:
Can any internal parts be replaced or do I need a complete unit
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Dave Sr. from SWISCO responded:
Thanks for contacting our Discussion Board. Unfortunately, if any of the internal mechanisms of your 39-329 ROTO Inverted Split Arm Operator are broken, then you will have to replace the entire unit.
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