Broken coils and coil support

A quick learner from Southern maryland says:
I ordered 2 pivot shoes from Swisco they were correct 15-192 they match the broken ones perfect
The coil springs S170-406 incorrect
Certain teed balance drum 15-157 incorrect
Certain teed lance spring cover 15-156 incorrect
1/2 inch coil double support incorrect
Please look at my picture and let me know if you have these parts , I am returning all of the incorrect parts
Thank you
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Tom from SWISCO responded:

Thanks for posting! Just letting you know we're looking into this and hope to have an answer for you soon. Please bear with us a little longer.

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Tom from SWISCO responded:

We're having a lot of trouble with this one. It doesn't look like your original balance springs are made anymore. Whatever we can supply you will have to be a substitute, assuming we can find something that works.

Before we go any further, you said that the 1/2" thick spring isn't right, but you didn't mention how thick your springs are. Can you tell me that dimension? Can you also tell me how thick the springs and covers are when fully assembled? Basically, I want to get an idea of how much space they take up in the window track.

Here's my logic. If the 15-192 shoe is the right size, as you stated, then the track has to at least accommodate something 7/8" thick. The only logical explanation is that your old springs and the cover, when put together, make up an overall thickness of around (or near) 7/8". Even if they don't, they would still theoretically fit in the track since they are equivalent in size to the shoe. In other words, if our 15-192 shoe fits, then our Series 170 spring and 15-156 cover should fit, too.

If they don't fit, then I'd like you to go into detail on why exactly they don't. Is there some obstruction, or some groove in the track that prevents them from installing in the same track as the shoe? Is there some detail getting in the way? Please be thorough.

A quick learner from Southern maryland says:

Thanks for the help Tom

The balance springs are exactly 1/2 inch

Fully assembled with cover 3/4 inch thick , any thicker than that when sliding the window up and down the window tilt mechanisms will hit the covers I have uploaded a photo

Thanks

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Tom from SWISCO responded:

Ah, I see. So the tilt latch is the culprit. It all makes a lot of sense now. Most window manufacturers install coil balances just under the minimum height of the tilt latch for this reason. Would it be possible to do that? You'd have to drill a new screw hole, but as long as it's under the tilt latch then I think you could still get the Series 170 spring and 15-156 cover to work. I've done it myself when this was an issue, though never with your exact type of balance.

A quick learner from Southern maryland says:
Great idea, instead of 2 covers and coil springs for each side 15-156 cover, 15-157 drum, S170-406 coil springs . Since the coil springs are thicker can I get away with 1 set on each side
Thanks
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Tom from SWISCO responded:

Sounds good to me! I was happy to help. Please let me know how it works out, or if you had any other questions. And, of course, thank you for your business.

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