Leak fix for fixed-pane windows
Both of the fixed (non-opening) windows in my 67 Tradewind are leaking. A PO has applied a lot of caulk on the interior and exterior edges of the window. To stop the leaks, I'm planning to remove all the old caulk, and replace the interior welting/glazing/weatherstrip (not sure what it's called) and then recaulk on the exterior, where the glass meets the outer shell.
Does anyone know whether it is necessary to remove the glass pane to do any of this? (For instance, to replace the welting.) If so, is there anything holding the glass in place in the window frame, aside from the welting? I can't find any evidence of tacks or other hardware holding the pane in place. It looks like it's held in place solely with the welt, sort of like a rubber/vinyl version of an old caulk window glazing.
Also, has anyone found a suitable replacement for this old welting? Any leads appreciated.