I've had all the versions so far. They seem to wear much the same. Some of the things I do:
Don't worry about the tape coming off - the sections slide better without it anyway.
I drill a hole in the wall where the tape used to be. When I extend the pole I look for the small hole then push the section back into the clamp by a centimetre.
If the pole keeps spinning and you are adjusting the same clamp throughout the day then it won't be wear that's causing it, it will be the bolt loosening off in the barrel every time you flick the lever open. Either fit a new barrel or a tiny spot of loktite.
If the clamp is too loose at max extension but too tight at lesser extensions then yes the pole is wearing where it is always clamped at the same point - vary your clamping positions. If the pole is that worn you can always saw off a couple off inches from the bottom.
Those of you who are tightening the screws with plyers
then you've probably cross threaded the barrel nut - buy some spares.
If the clamp lever feels really tight and the pole still spins then check the clamp body has not come unstuck from the shaft - superglue will fix it (don't allow
any to drip inside the tube!)
I normally sell my poles on after a year and they still have loads left in them. The surface will wear, you will need gloves, you'll need to change the end cap a couple of times a year and you will need to pull the sections right out now and again to flush through - dead easy!
Use the push fit taps and rectus 21 fittings so you can whip sections off or add further sections.
I can't believe how some of you can't cope with very very basic diy :