N103 Pinlock Fogging Up

[Timbollew]

Hey, I've got a Nolan N103 helmet with the pinlock insert but with the visor closed it still fogs up if it's raining it gets pretty bad and then the rain gets in there when I open the visor and I'm screwed. I changed my pinlock a couple of months ago in the hope it would solve it. I thought Pinlock was supposed to be the shizzle! I don't find the airflow paarticulary good in the N103 but wouldn't have thought it'd fog up like this. Anybody have the same helmet or same problem with pinlock?