It seems these old windows aren't worth saving, and the house desperately needs a face lift.
Have you ever been ok with something for a while, and then all of a sudden, snap! We have known for five years something had to be done about the exterior. Now, all of a sudden I can't get things fixed fast enough! I always assumed we would restore the old windows. We can - but since we are west facing, the afternoon heat will attack the paint and leave us with a peeling facade again, unless, every year, we pour time into maintaining them. This was NOT what I wanted to hear.
So new windows it is!