Is there a hole on the side of 15-155?

A quick learner from double hung repacement windows says:
I need to know if there is a hole to screw the spring on one side of part 15-155.
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Mike from SWISCO responded:
Good Afternoon,

There is a hole on the side of the 15-155 shoe. Here is a picture of the hole.
Alternate view of the 15-155 shoe, displaying the hole on the side of the shoe.
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