thanks for the help-It was of course-the foam in back of the box that you had indicated. I found it was falling off, but still part was attached. I poured fast tack adhesive around the edges and around the holes where the hoses pass through, and now I have all kinds of air flow. I always wondered why my feet were freezing a few winters ago...Doing this work has also motivated me to rebuild my mode switch once again, (still leaks on MAX though-but at least it moves better now that it is all lubed up). I also rebuilt my otterstat switch- removing those crummy plastic pieces that broke, very simple to do I will post pictures and description of this work for those who are interested. I was wondering about the A/C having anything to do with defrosting, because I have no A/C in my car, I've removed the compressor and lines-people have told me that when you use defrost it uses a little A/C. But my 1950 buick defrosts just great with no A/C, so I'm sure I will be find. Thanks again Jake, I should have looked through the tech pages first before posting, but thanks for the help and reminding me about the tech pages... -Dani B. #5003 To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/