| Joined: | Mon Apr 2nd, 2012 |
| Location: | South Lakeland, UK |
| Posts: | 4066 |
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If so it could be expansive corrosion inside the collar. Aluminium is very prone to salt air corrosion.
I would try tapping the collar gently and trying to turn the collar with the friction lock fully loosened. Does the collar remove? I think some do some don't.
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Robert.