I have had some cavitation with my '04 GTI LE RFI, so I replaced the wear ring. It had .020 - .025" clearance between the impeller and ring. Now with the new ring in, it has .024" clearance all around. I'm guessing that I need a new impeller. What do you guys think?

If I need to replace the impeller, please give your advice on replacement. Stay with same impeller, change to more aggressive, buy from this dealer or don't buy from some dealer, etc.

Thanks a bunch for your input.