Looked around for the top window sash guide. The generic ones don't work on my window and Lowes and HomeDepot didn't stock what I needed. If you have the same problem, I hope these can help you.

The generic ones have the hole in the center of the guide, mine is slightly offset towards the inward facing part of the window. Mine also had a top cap, so I made these to the shape of the original.

It would be better if you can print it in ASA. But if you don't have it, PETG should work for a couple years.

7/30/2022 - Update
Adding a V2 version of the top sash guides. The difference is the cover is a little bigger to provide a better appearance over the sash frame. The inner slot dimensions were reduced a couple millimeters. It should allow the window to work, as the seasons change.

Creality

Ender 3

Yes

.2

40%

hotend: 245 first layer -> 240
hotbed: 65 first layer -> 60
speed: 40 mm/sec
retraction: 6 mm