Lewis,
small scratches will not be any real issue, some minor scatter but fairly insignificant. It depends on what the scratches look like and how deep they are are in the coating and mirror surface. My RC12 with dialectic coatings was subject to spider faeces 5 years ago. The faeces left a 50 cent piece sized area with small spots with mirror coating eaten away. I have not noticed any significant degradation in performance of the mirror. So small scratches will be the same. I wouldn't bother with getting it re-coated. Do you have a shot of the scratches?
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