Casement Window Hinge Kit and Operator

A quick learner from Hawaii says:
In 2014 I installed Milgard casement windows. The lower hinge for a same size window in the attached pictures broke and requires replacement. I am unable to get the part from Milgard. Additionally, the operators for 3 of the windows are corroded. I've not been able to find hardware that matches the dimensions or types from the original manufacture. I request assistance in identifying OEM replacement parts or suitable replacement parts to make the appropriate repairs.
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Casey from SWISCO responded:

Hello,

Your operator resembles one of the Encore-style operator pairs shown in the video below. I would recommend detaching the long arm from the sash track to confirm which end fitting matches yours. 

Unfortunately, we do not carry replacement hinges with a 13" base but the 14" long 36-049 hinge pair could still work as long as you replace the top and bottom at the same time. Take a look and see what you think. Thanks for posting! 
Comparing the 39-253LB & 39-438B Operators
Comparing the 39-253LB & 39-438B Operators
VIDEO
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