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Old Mar 17, 2011, 7:25 AM   #1
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Join Date: Sep 2008
Posts: 94
Default 300 and 400mm mount bearings flogged out


Has anyone had serious issues with the bearings in the 300 2.8 and 400 2.8 mounts flogging out?

Mine have gone after a year of use and I'm just about to try and work out my next step to cleaning them up hopefully for the weekends use.

Any ideas?

Current Setup: Canon 1D Mark IV + L Series Lenses
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