Jeremy, do you know how many thousanths is actually shaved off of the plungers to make a 190cc injector?Really? So it is that technical? You unscrew the injector. Hand the plungers to a machine shop. They cut them. You reassemble. If you really want to get crazy you can get a new set of injectors in whatever nozzle size you want. Now you have a set of injectors built for around $600. Basically a third of the cost.