I had thought I'd fixed the "transformers" sub-category bug, but apparently not. Until I get a chance to dissect it properly, I just went in and set the 'search terms" for the "transformers" sub-cat to "kre-o transformers", and that seemed to do the trick. I do note that the auction matcher is still having trouble differentiating between this basic set and the larger 9-million piece set, which seem to be named identically. Any suggestions?