replacement parts for my original Acorn windows

A quick learner from Sea Cliff says:
To whom it may concern
I am looking to order the following replacement parts for my original Acorn windows as follows:
1) (30) Black plastic top caps. See Photo Acorn 012
2) (30) Black Plastic Washers and Screw. See Photo Acorn 006.
3) (14) White Plastic Window Glides. See Photo Acorn 002.
4) (16) Springs. Channel is 23
User submitted image of their window hardware.
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Paul from SWISCO responded:
Acorn has been out of business for some time, so some of the parts are no longer available. That said, we may still be able to help. I'll go through each of your parts one at a time.

1) This top sash guide resembles our 18-041, which is an Acorn top sash guide. I would make sure the dimensions match up, just in case.
2) The washer isn't around anymore, but I believe you could substitute it with our 10-112 bumper and 33-011 screw. Let me know what you think.
3) We're having trouble finding this guide. Can you tell me its exact dimensions? Could we also maybe see it installed?
4) Finally, for the balance, we recommend our S710-23. The shoe is not the same, but it should still work.

Please let me know if you have any questions.
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