Top Sash Guide Pair, Alsco

I'm trying to find these parts that go in the top corners of the sash for aluminum windows with channel balances.

Many of the windows in my home are old and the top sash guides keep breaking. I am hoping to replace them all. I am having trouble finding an appropriate replacement. I am hoping you can look at the photos and provide a recommendation.

I ordered part 18-196 sash guide but they are too small. I need size top 1and 1/8"by 1 " and 1 and 1/2 inch. I hope the images will help.

I've searched for these sash guides and cannot find the exact replacement. Any help would be appreciated. Thank you

I need 4 new top sash guides, 4 balancer clips and one 2740 balancer. The top flat plastic part is 3/4" wide, overall height is 1 5/16, and the lower portion of the guide is about 1/2". Window is 20 years old and made by Pacific Window.