maddoc
... likes film again.
Sorry, I don´t agree. M4-2/M4-P bodies are more prone to this. This problem has been well-documented. Leica has gone so far as to create a special cleaning solution to temporarily get rid of the problem - ask Sherry. The only permanent solution is to replace the rangefinder. All the bodies that I have seen at dealers had to be previously cleaned by a repairman.
That is the first time I hear about this ! 😱 I have my second M4-P now and no problems with a hazed / fogged VF.
Could you provide some more informations / links about this topic ? Also you write "the only permanent solution is to replace the rangefinder", what is different with the rangefinder of a M4-2/M4-P compared to later ones (M6 for example) except the LEDs for the metering ?