You probably already know this, but if you mix your epoxy in a cup, then spread it out on a paper plate (or the last issue of Model Aviation, AKA "Drone Monthly", it will cure slower since it won't exotherm.
Of course, if you need it grouped up for application, it's not helpful having it spread out on a plate.
But if you are brushing it on an area, this works pretty well.
Your connector picture and post gave me a belly laugh, thanks for that AND your service!
V/r,
Chris