Window hard to come off closed seat. have to push out by hand at same time to get un jammed

A home owner from Norfolk Va. says:
November 4, 2020
looking to identify correct replacement part for this window SN 113-694545 manufactured 10/27/04 PO7273 24x52.

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Bob from SWISCO responded:
November 6, 2020

Sounds like you need a new casement operator. See our 39-221B. Look over the dimensions and see if you think this matches up. 
Encore Dyad Sill Mount Operator, LH
Encore Dyad Sill Mount Operator, LH
39-220B
$24.95
Encore Dyad Sill Mount Operator, RH
Encore Dyad Sill Mount Operator, RH
39-221B
$24.95
How to install an Encore dyad operator
How to install an Encore dyad operator
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