need help in identifying replacement spiral balance and bracket

A home owner from Fremont California says:
Hello, I need your guidance in selecting a spiral balance and bottom sash bracket.

These are for Mercer non-tilting windows. The existing spiral balance is 3/8" diameter, the tube length is 36", the rod extension is 5/8". The nylon bearing is degraded and looks to be a gray color (photo attached). The weight of the sash this supports is 29.2 lbs. It looks to me that I need a 36" series 400 balance but neither a green or white tip will be sufficient to carry the sash weight; I believe I need either a yellow or blue tipped balance. Can you make a custom series 400 balance to support 29.2 lbs? I need quantity 4.

I could also use your help in selecting bottom sash brackets to replace the damaged ones on my windows. The existing brackets are essentially the same as your bracket 17-010 but mine is 7/8" in height rather than 3/4", and mine has the number "51" stamped on it rather than the number "13". I need quntiye 4 of these also.

Thanks - let me know if you require more detail on this.
User submitted image of their window hardware.
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Tom from SWISCO responded:
Thanks for posting! I believe our S400-36 with a Yellow Tip can work for you, though we do not currently have it in stock. I will let you know when they are available. As for the bracket, I would recommend our 17-010.
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Tom from SWISCO responded:
Alright, our S400-36 Yellow Tip option is now available.
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