Hmmm, it doesn't look like it fits fine or would actually function as a bugcather window to me. We also sell the (incorrect) pivot gasket you used but I wouldn't recommend them on a bugcatcher application as they simply don't work. I suppose if you're just going to have a static window, they may...
You bought the center pivot style w/s. Apparently it kinda fits with the bugcatcher glass/frame according to your pic, I've never tried.
We do offer a Bug Catcher W/S Kit that covers both heights:
https://forum.ih8mud.com/threads/bug-catcher-weather-strip-kits-for-your-1958-1966-2x-4x.931553/