try spraying the track with light furniture polish giving it a rub over and then working the cord.
margaret, February 2009
Even lightweight curtains seem to place too much weight on the track to allow the hooks to move freely. Try vaseline or grease on the top of track -it will completely reduce the friction on the track and strain on the cord
Bob, January 2009
Well, I just bought some the other day...looks like I'm not even going to attempt to put them up!
Sad Dave, January 2009
I don't have an answer, but I had exactly the same problem. I think there's a fault with these rods. Very, very annoying.
Steve, November 2008
I don't have the answer but I do have exactly the same problem.Advice please.
B&Q Weary., November 2008
edit
I can answer this question...
how can I make my new B&Q corded curtain track work?