I posted a topic concerning this problem last year
http://www.cleanitup.co.uk/smf/index.php?topic=81646.0Alex did take back my pole and he did replace one section and cleaned the others, but the problem of it still sticking was no cured.
I have many different poles, from various suppiers and the slx is the only one that jams.
What I have found to get the best use out of this pole is
1 Run the pole hose on the outside if possible, this will give you up to a month of usage, before you have to take it apart and clean it.
2 At the end of each section there is a yellow and red band, remove this, because parts of it do come off with use, and jam they the poles together.
3 If you want the pole hose to go though the poles then you will have to strip the poles down evey week and clean them.
The best method I have found is, I take all the poles apart and clean the outsides first in the bath, I then pour loads of water down the insides of the poles, I them draw a cloth which is attached to a piece of cord though the poles, this is the same method used when cleaning rifles.
You will find that the pole will work ok for the next week.