I have posted before about gardiners clamps.
They DO expand and contract with changes in ambient temperature and sometimes require day to day adjustments if the weather is all over the place. Alex posted a reply that he would look into this but he has not confirmed this himself yet but i have proved it in the field with a CLX27 for almost the last 2 years.
The consolation is at least they are easy and quick to adjust with the need to even put the pole down or use a screwdriver, as a professional window cleaner i accept this as part of the job, i do not find it a burden in any way.
I find using a nylon lubricant on the clamp levers also greatly reduces wear and prolongs the life. They great poles on the whole - and extremely good value considering for example a CLX27 can pay for itself within a working day. My CLX27 is still going strong after 2 years on original sections with only the need to replace a clamp barrel nut that got cross threaded in that time, and that is on daily use.
There you go Alex - how about a job in your PR department - or at least some complimentry pole hose
