Regarding these extra words ...
The preamble discusses "piece" clues and then says "In two
other clues a word needs removing ...". I read this to mean two clues which are
not "piece" clues, but kirky's comment suggests otherwise.
Does anyone agree/disagree with my interpretation? I've filled the grid, and
think I know the author and the quotation, but I'm having trouble finding more than one word which doesn't "fit" with the clues and my answers!