If you want to eliminate the windscreen as a leak source, pressurize the cabin and either listen for the leak or use some water.

When you hear it coming from the corner of the glass, have someone gently* push on it from the inside, so you can hear the sound change. That will convince you.

*gently because in the South Florida heat, the butyl, if still set in that, is rather gooey.


--
Art Benstein near Baltimore

Salada White Tea with Green - astringent hint of collard greens (where's the ham?)