26" Balances on Viking single hung windows stamped 2520

A quick learner from San Jose, CA says:
Stamp 2520
26" balance
Top shoe appears to be 19-005
Bottom shoe looks like 15-003, but dimensions are 1 1/16" not the 1 3/16" depicted in your diagrams.

Will a series 380 or 385 balance work, with the slightly different bottom shoes them mine?
Build balance not listed in your series with 19-005 top and 15-003 bottom?
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Good morning, and thanks for posting. I can help you choose the right window balance to order. I'll need you to confirm what that bottom shoe is first. Just by eyeballing it, it does not look like our 15-003. I think it's more likely that it was once our 15-001 and has simply worn down with age to a 1-1/16" depth. I would like you to confirm.

If so, the balance I would recommend is our S395-26 with the 2520 option.
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