Oh I agree Richard. Worth adding that it seems with a Morgan if there is a problem you just fix it, at least that is what most people seem to do.
I find that water that can accumulate in the channel for the sliding window and is a a bit annoying. I am thinking of drilling a small hole in the front corner, where it seems to accumulate, to let it run out.
I recently spent a day driving across Northern France in the rain and kept a bar towel handy for the inevitable leaks, a lot depends on speed and wind direction. Drilling a hole in the side screen frame would be considered a modification to your Morgan and void your warranty....
