FWIW:
Just ordered these crimping pliers via Amazon to crimp the JST RCY connectors sold through TCSS.
IWISS IWS-3220M US $23.99.
Cheaper than the Engineer brand and effective.
Also been using these Dewalt 4.5 " trigger clamps. US $ 6.67 at Home Despot.
My wife thinks they're cute, so that's a bonus.
Cheers!
IWISS 3220M
DeWalt 4.5" Clamp
IWISS
Attachment 18034
Dewalt Clamp