JST JWPF connectors & Plex Knock Monitor v3

The Plex Knock Monitor v3 has a JST JWFP connector that can send an analog output to a Dyno. Does anyone have experience crimping the JWFP contacts using a tool other than the dedicated tool from JST? The Plex came with the mating connector and contacts. I'll purchase more contacts if I need to experiment to find a crimper that works but it would be nice just to get it right the first time if someone else has already figured it out.

I'm working with the Sargent terminal repair kit 3330-TRK.