My 991 Gen. 1 has suffered with a jammed heater fan a number of times, which was finally replaced when the car was 3 years old (it makes the car impossible to drive with a misted up windscreen). However the problem has now returned again and my OFC has unjammed it a couple of times in the last few months. Apparently it is not now "Porsche" policy to replace it but just to unjam - but it has happened again and I am getting annoyed that it has not been replaced. Has anyone else suffered with this issue or I am just unlucky?