I snapped a gooseneck completely in half on my Tucker WF pole today trying to close a bl**dy stiff open window. Had the pole about 4 years and am always pushing any stiff open windows shut with it. It's taken so much abuse that I wasn't surprised to be honest.
Wouldn't dream of trying to shut any stiff windows if using carbon poles as I once learnt the costly way and had to replace a broken pole section at over £100 quid a section.