Great idea turning the windshield the other way - true - less ice frost outside than inside! Not tried yet

!
Anyway i am reading all these msgs mentioning thermostat and thinking - do we really have a thermostat?
Well, there is a 126 parked frequently in my street and I am trying to catch the owner and:
1. Ask him/her if he/she experience same problems
2. Ask to join a ride to see if there is any difference
3. If the situation in that 126 is better (or he or she already solved the problem) to find out the solution i.e. magic touch, a big secret, the final truth, great discovery, revelation etc.
In the meantime my Opel Vectra had been repaired and I'm driving it now, waiting for springtime to use 126 again for fun.