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The focusor tube scratching is normal for that focusor. I have had three of these scopes and all the standard focusors did this. Those focusors are made by GSO and that is paint not anodising. As Peter has said, you should use a feather touch. I had a spare feather touch and bought an adapter to suit from Starlight instruments. Those scratches have zero effect on the performance of the standard focusor too.
The main issue is being able to be sharp detail on the surface and proms. The surface detail on a single stack scope will be harder to see but it is there in a good unit.
If you are not happy with the unit, send it back and tell the retailer why you consider it defective. The focusor scratching will not be a valid reason but the scratches on optical surfaces are legitimate reasons to return the unit. I am sure the retailer will help you out.
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