Uncle Dave,

I checked the Kaces Porter website and it lists size 13 for the PSR740 (no listing for the PSR2000). The PSR740 is about the same size as the PSR2000, right?
http://www.aceproducts.com/f_kbdchart.html

Can you possibly double check to confirm that your case is actually size #7 and not #13. Thanks.