Too humid overseas mainly in Asia where many are. Wet hands get on the wrap with consistent play, which intern causes problems at the A joint.
I know mine are All Straight & All Original with only the South West Shop working on them for ANY REPAIR including tips.
Another problem is believe it or not, some people do not store their cues well. They should be wiped down after every use. Then put in a competent case, and stood up straight in a climate controlled room or safe!
Hope this sheds some light.
Happy New Year
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Thank you.