Multiple holes drilled in the casings has all but eliminated misting.
I fitted a leather apron to the top of the dash which covers the gauges and keeps any water leaks out.
They misted in Scotland in the Grampians but that was extreme with heavy rain and hail. Roof down......
Using sidelights made no difference to mine.
My Plus 4 rarely shows any misting. Maybe a hint when the weather is really cold.
