Williams drilled 4 or 5 holes in the roof's trailing edge - which the S1 doesn't have. On the other hand, does the S1 have heated windows?
Will
Interesting that it would do that, have you tried running the AC as that is a great way to remove moisture even if its cold and set to heating. My S1 has heated glass all round, so it will just be the rear screen that isn't (unless I can source a heated rear GTN screen).
Yes. Williams did too good a job of sealing the cabin (a first, I'm sure!) so that on a wet day there wasn't enough airflow to prevent fogging, even with the aircon on full chat. The heated screen had to be On to prevent misting. If there's nowhere for the air to flow out, it can't come in, no matter how you set the blower. I may be the only Morgan owner to suffer this problem :-)
WIll
Formerly Aero S5 #80 Currently 911 (992) Targa in python green