Mastic window replacement parts

A home owner from Bristol, PA says:
January 7, 2019
Hi there! We have Mastic tilt windows (most seem to be from 1996). We have figured out that we have 5/8 spiral balances in our windows but are unsure of what shoes we need. All shoes in our windows seem to have a red piece of plastic in them and a piece of metal on the top.
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Bob from SWISCO responded:
January 8, 2019

Thanks for contacting SWISCO. I can't be certain what pivot shoe you need without seeing the pivot shoe removed from the window. Could you take a picture of it removed, and also could you provide the width and thickness of the shoe? We should be able to narrow down what you need then. Thanks.
A home owner from Bristol, PA says:
January 8, 2019
Hi Bob,

We will try to remove one of the shoes tonight. In the meantime, here is a picture of a replacement shoe that is in one of the windows. Maybe that will help? The dimensions of the shoes are: 1 1/2 width, 2 1/8 height, 5/8 deep. Will follow up with shoe out of window. Thanks for your help! Was really relieved when we found your site. I was scared we'd have to buy all new windows!
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Bob from SWISCO responded:
January 8, 2019

Thanks for these! Based on these photos, give our 15-015 a look. Confirm the size and see if it's a promising match. Also, if you need help removing your pivot shoes, check out the video below. 
Pivot Shoe, 17/32" Thick
Pivot Shoe, 17/32" Thick
15-015
$1.55
How to replace a tilt window spiral balance.
How to replace a tilt window spiral balance.
VIDEO
WATCH >
How to Remove a Pivot Shoe (Cutout Method)
How to Remove a Pivot Shoe (Cutout Method)
VIDEO
WATCH >
How to remove window pivot shoes
How to remove window pivot shoes
VIDEO
WATCH >
Anatomy of a tilt window
Anatomy of a tilt window
VIDEO
WATCH >
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