Thanks for all the great info. I know that moisture is probably the worse thing for machines but I did not realize how moisture can show up in certain places. I always keep a scrap of fabric under my foot between the foot and the plate. Did not realize that it can cause a problem. I will be headed out to the studio today and the first thing I will do is pull out those scraps from any/all machines. And yes, you guys/gals are so right ..... the machines need to be used and passed on to others if they are not. I have a couple more that I should do that with but some will stay with me. Haven't used my two teadles in a long time so I should get them oiled and humming. Still need some re-organizing after a not too distant move and house rehabing. Thanks for all the discussion on this subject. I am now so much more informed and that is never or at least hardly ever a bad thing.