[stevehouse456]

Thanks for the quick reply Dave. The screw does tighten well into the hole, so I didn’t consider corrosion. What can be done if this is an issue? Also, have you any ideas about the fan blade? Should the back of it be totally flat around the edges? It seems to go up and down and be quite ‘wavey’. Is it supposed to be like this and I just haven’t noticed it before, do you think, or has something made it do this? Thanks.

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