Im getting the same opinion of Duncan so far. Since it is a small window, Im going to have Coach Glass in Coburg, Oregon fix it. But they only replace with laminated glass.
Update: Duncan only sells complete side windows. No just glass replacement. Atwood frames are 2-1/2 radius and are obsolete. All new radius windows are 3” radius. They emailed me a template to see which I have. If I have the 3” then they Might be able to source only a complete window. Geeze!!!!