I guess you are talking about your "tambour doors"?
Once again, plenty of threads on them. There can be several problems with them, ranging from simple lack of lube to delamination, separation, broken coil tracks, foriegn objects stuck in them, (mud dauber nests in my case) etc., etc. They are both, a blessing and a curse, like most things in life.
I would remove the tambout that is sticking (take out sprial bracket), see if there is seperation or dirt, correct or replace). You may be getting near the time you will have to replace them all. (As noted above, search tambour in the forum and you will find everything you need to know.)