Anyone have any tips or solutions for the problem of having a hard time to breathe out of a full over the head mask. So far I've read to enlarge the nostrils, place foam inside to bring the mask away from the face and finally using a breathing tube. I don't want to cut the mask. I think the foam wouldn't really work(I have a large head). How about the tube? Anyone try that? Any other solutions? I mean besides not wearing such a mask.