We have quite wide windows and most of our curtain poles are the sort that come in two parts. You slot them one inside the other which does of course leave a "bumpy" bit where the join is.
On some of the poles this is fine, but on others I have a real job to pull the curtain along the pole. (the curtains have round hoop type fixings, not tab top). In one room I can't close the curtain over the bump unless I climb up and move the hoops over it manually. It is a real pita.
Any ideas? Would WD40 help or not to make it more "slidey". Could I try and file the metal where the join is to make it smoother? Any tips gratefully received.