skylight Crank mechanism for roto skylight

A handy person from 02062 says:
Part is worn at the pinion and worm gear P/N 45015
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Casey from SWISCO responded:

Hello,

Unfortunately, we only carry one skylight operator, which would be our 39-379. If yours is Roto, I'm doubtful that this is the operator that you need. I'm sorry we can't offer more replacement options for you but we wish you the best of luck with your repair!

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