Fer crying out loud, when you need to use a hammer do you keep pounding a nail the way through the roof plywood and past the 2X12 beneath?
A modicum of craftsmanship and attention will tell you that a die that fits over the lug without too little or too much play is going to crimp correctly. It's far more important that the lug fit the conductor.
An overtightened lug is going to split or squish lug material out of the die.
Soldering takes TIME and in the world of manufacturing TIME is MONEY.
STOP with the soldering and vibration bit, already. Someone said the FAA prohibits soldering on aircraft, that is true. No one is going to spend the money to do it RIGHT. Argue with FAA/PMA alternators and starters that are clamped to the engine and have dozens and dozens of soldered joints. Out of a hundred mechanics, car, truck, aircraft, maybe just maybe THREE know how to solder.
Whisper the word SOLDER to a manufacturer and you will get one to two responses:
a) They have instantaneous cardiac arrest
b) They reach into a drawer for a .45