You could do as I did. Go out and spend $800.00 for an OTC nozzle-rater! Just 400 more injectors to go and I break even!

I use it at my work so it is actually an essential tool for me and no, I don't rebuild other peoples' injectors before you ask.

$36 isn't bad for the rebuild and rating process. Figure on almost an hour shoptime for two injectors. Yeah, I'm sure it can be cheaper in other locales but, when it's their ball ya gotta play by their rules. You're paying for the convenience of not having to ship the injectors.