2 months ago my C70 stopped blowing cold air on the passenger side. Not a huge problem, except on days when the temp is over 90 degrees. Finally took it to the dealer and they have come back that the temperature motor box would need to be replaced ($1400) and if that didn't fix it, then the climate control box would be the next thing to replace. Has anyone had this problem and if so, were either of the two items I noted the key to resolving or is it something simply and hopefully cheaper? Thanks.