Canon 100-400L push/pull tension ring

bstonehouse

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Question for anyone with this lens

I have a problem on my lens - the tension no longer tightens up enough to 'lock' the zoom. Has anyone else had this problem - is it easily fixed. Any help or advice appreciated.
 
I read about this when researching this lens. It's something to do with the ball bearings that are under the ring. I'm pretty sure I read about it on POTN or fredmiranda.com/reviews.

Good luck.
 

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