Swisco Part Top-Sash-Channel-Balance-Guides/18-044 comes closest to matching my window guide (Stop) in shape and measurements. How significant are the measurement differences noted below? Your top cap is 1/16 more in width and depth than my part. Your center of screw measurement is 1/16 less than mine. Your overall length is 5/16 longer than mine.
I have searched through your online items.
18-044 appears to be the closest match. Do you have other replacement part suggestions, see attached images of measurement comparison and stop as installed in my window