new handles and possibly new crank/slides

A home owner from Iowa, USA says:
We are painting our windows white and would like update to white hardware. These are Marvin windows 2003. Would like to know if Truth Folding Handle And Cover Kit
39-107FK works or what should I buy? We have 2 windows that don't crank out correctly and have to manually from outside pull/or push window to move. The guts on the picture 4 says #31512. Thanks for any help.
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Casey from SWISCO responded:

Hello,

Take a look at our 39-171 and 39-172 operators. Review the dimensions and compare them to your original assembly. 

The covers of these operators are not removable but they are compatible with the 39-205 folding handle. Thanks for posting! 

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