Search filtering on size
 

Have scanned for advice on this subject but can't find what I'm looking for so apologies if someone knows better.
Most of my searches drag up the usual myriad of file sizes of 197.7KB and 228 KB which as everyone knows is nothing but a load of trouble.
I have tried several ways of doing a search to filter these out in the returned results but haven't cracked it yet.
The filter option in Tools doesn't give me a way to filter by size, ie by disallowing a file of a set size, which can be added to once another prevalent bad file size download hits the results.
Can anyone suggest a way to do it.
Better still, as I haven't actually had a legitimate result with a file of these sizes, can't LW remove these from the returned results automatically by not showing them? Maybe penalising the original perpetrator would be good if an original named file is dragged up with the scam size.