Hi Bev
It's easy to solve this problem! Buy a spray can of furniture polish - Sainsbury's have their economy brand at 30p - spray on a duster and wipe rail going into grooves. I also wiped hooks as well.
Result - glides at the touch of a finger.
I would like to claim the credit for thinking of this - but got the solution from an internet search!
Mary
mary devereaux
March 2009