Obsolete Pella casement weatherstripping circa 1988-90

A home owner from Princeton, IA says:
we moved into new house in 1991, so guessing windows installed 1989-90. I cannot find marking of serial number. The weatherstripping is a hard white plastic (the part with the open bended end, closest to my index finger in picture) and the bubble part is a thin gray rubber. It is nearer my thumb in the picture.
The Pella rep I talked to said I'd need to send measurements of windows (there are 25)so they could get the corners right (?). Pella has the product, but wants to install it for 100.00 per hour, at a half hour per window. Can you help us with the weatherstripping?
User submitted photos of weatherstripping.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Thanks for posting! We don't have an exact match for this, but we still may b e able to help. See our 58-055 and 58-170 offset weatherseals and let me know if you could get either of these to work.
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