Im not sure if this tip as been told on here before but as far as the "spinning sections" that you get when they wear a little. Ive got a easy (albeit temp) fix solution... Electricity tape!
Honestly just like when you use tape for the positive stop ends on each section, when a section starts to wear and spin, just use a wrap of tape on that part of the pole section (normally at the top where it get the most use!
having said that it as to be WELL worn other wise it just acts as a positive stop at the top (which still accomplishes the job)
And having said all this im still gonna upgrage to the smart clamps for my slx 30